The Cutest Yak In Colorado. Dr. Jeff treats a cherished Bloodhound puppy that won't eat. Plus, Dr. Petra comes to the rescue of a cat after it swallowed a handful of hair ties.
07:00 Dr. Jeff: Rocky Mountain Vet 5/11s.
Ready To Roll. Dr. Jeff and the team head to a remote town offering low-cost care to pets. Plus, Dr. Petra performs life-saving surgery on a Basset Hound that was hit by a car.
07:48 Treehouse Masters 5/5s.
Adventure Headquarters. Pete and the team give a thrill-seeking couple their dream treehouse, straddling three cedars with a wraparound deck providing 360 degrees of stunning views.
08:36 The Zoo 4/11s.
A Rare Egg. The Central Park Zoo welcomes its first Atlantic puffin chick. Meanwhile, an endangered species of gecko welcomes her first hatchling and Penny the rhino undergoes tests.
09:25 The Zoo 4/12s.
Cougar Cub Rescue. A trio of abandoned puma cubs arrives at the zoo. Meanwhile, a Caribbean flamingo is born at the zoo after nearly 20 years, and Otto the stallion makes his debut.
10:15 My Cat From Hell 9/12s.
Meow Mates. Jackson visits a "Cat-Bassador" who works with his guardian to help special needs cats find forever homes. Plus, Jackson visits an incredible prison programme.
11:05 My Cat From Hell 4/1s.
Deaf, Blind, and Biting. Burberry, a cat that is mostly deaf and blind, has stopped using her litter box and has become violent toward its owners. Can Jackson help?
11:55 Lone Star Law 4/20s.
Hunting Hunters. During prime deer season, the wardens are extremely busy. Bad weather conditions lead to a serious car crash and illegal deer disposals are investigated.
12:50 Lone Star Law 4/21s.
Finding A Felon. Game Warden Inman tackles a potential pollution case with help from an environmental crime investigator. Plus, Warden Herchman saves a great horned owl.
13:45 Animal Cribs 1/5s.
Ultimate Manimal Cave. Antonio transforms a cluttered basement housing more than 20 rescued reptiles, mammals and birds. The team build exotic enclosures and an entertainment space.
14:40 The Last Alaskans 2/1s.
Home Again. As the summer fades, the last Alaskans begin their countdown to trapping season. Heimo works to ready a campsite, while Tyler and Ashley hope to stock up on moose meat.
15:35 The Last Alaskans 2/2s.
Only the Strong. The countdown to winter continues as Heimo breaks ground on the new cabin, while Bob and his daughter embark on a river journey to the cabin where she was raised.
16:30 Wildest Islands Of Indonesia 1/4s.
Secret Worlds. From deep below the ocean surface, to the vaulted canopies of Borneo's tallest trees, discover the hidden worlds of some of the planet's most fascinating creatures.
17:25 Dr. Jeff: Rocky Mountain Vet 5/11s.
Ready To Roll. Dr. Jeff and the team head to a remote town offering low-cost care to pets. Plus, Dr. Petra performs life-saving surgery on a Basset Hound that was hit by a car.
18:20 Wildest Islands Of Indonesia 1/5s.
Dragon's Domain. Indonesia's heat enables its reptilian residents to thrive. From the forest canopy to the coral-filled seas, how have these habitats become a dragon's domain?
19:15 Crikey! It's the Irwins 1/9s.
Race To Save The Platypus. Terri welcomes Mballa, a new cheetah cub from South Africa, to the Australia Zoo family. Meanwhile, Robert sets out to save a stranded platypus.
20:10 Crikey! It's the Irwins 1/10s.
Tortoise First Date. Love is in the air at Australia Zoo! Terri helps determine if Caballe the Rhino is pregnant, while Robert matchmakes the zoo's Aldabra giant tortoises.
21:05 The Story Of Plastic
A detailed look into the environmental damage and human rights abuses that occur throughout the lifecycle of plastic. What can companies, countries and people do to fix the issues?
22:55 My Cat From Hell 9/2s.
My Pup From Hell. Jackson works with Sydney, a Bengal, who keeps spraying on every piece of furniture in the house. Plus, energetic cat Stella threatens to harm a toddler.
23:50 My Cat From Hell 9/3s.
Pee Battle. Jackson works with a mother daughter duo whose lovable cats are having a territorial spraying match. Plus, he meets with troublemaking cat Bowie who's on his last chance.
00:45 The Zoo 4/11s.
A Rare Egg. The Central Park Zoo welcomes its first Atlantic puffin chick. Meanwhile, an endangered species of gecko welcomes her first hatchling and Penny the rhino undergoes tests.
01:40 The Zoo 4/12s.
Cougar Cub Rescue. A trio of abandoned puma cubs arrives at the zoo. Meanwhile, a Caribbean flamingo is born at the zoo after nearly 20 years, and Otto the stallion makes his debut.
02:30 Dr. Jeff: Rocky Mountain Vet 6/6s.
A First For Dr. Jeff. Dr. Jeff performs a surgery he'd never done before on a dog with laboured breathing. Meanwhile, Dr. Baier saves some neglected ornate box turtles.
03:15 The Zoo 4/10s.
Tiger's Day At The Dentist. The staff hope for a successful breeding season when Mshangao the giraffe meets the herd's females. Power tools are needed for an Amur tiger's root canal.
04:00 Treehouse Masters 7/11s.
Super Spy Treehouse. Pete heads to Alabama's Appalachia to build a super spy treehouse, featuring talking gadgets, hidden passageways, secret rooms and more!
04:45 Treehouse Masters 7/17s.
Hot Tub Rumpus Room. A friend of Pete's wants a treehouse strictly for good times, complete with a wine bar, a loft and Pete's first ever hot tub in a treehouse!
05:30 How Do Animals Do That? 1/9s.
Episode 9. Experts reveal how swarms of blind bats avoid collision. Do mice really like cheese? What makes manatees' farts so special? And, why are slugs so slimy?
05:55 How Do Animals Do That? 1/10s.
Episode 10. Experts examine how humpback whales leap so far out of the water. Plus, why do dogs tilt their heads? Why do animals swarm? And, how do spiders shed their own skin?
Ready To Roll. Dr. Jeff and the team head to a remote town offering low-cost care to pets. Plus, Dr. Petra performs life-saving surgery on a Basset Hound that was hit by a car.
07:00 Dr. Jeff: Rocky Mountain Vet 5/12s.
Family Reunion. Shelter volunteers drive from Kansas hoping the team can save a tiny rescue dog. Plus, Dr. Jeff's cousin asks for the vets to visit Tennessee to provide free care.
07:48 Lone Star Law 4/12s.
Saving The Herd. Game Warden Eddins assists the local police with an animal cruelty case. Plus, Richards responds to a trespassing dispute and Roraback relocates a snapping turtle.
08:36 Lone Star Law 4/13s.
Stray Bullets. Gerry investigates a situation involving stray bullets while checking teal hunters along the border fence. Plus, turtle hatchlings are released on South Padre Island.
09:25 My Cat From Hell 9/4s.
Lucifer The Cat. Jackson helps a single mum whose cat, Pickles, is terrifying her kids. Plus, he works with Lucifer, a cat whose devilish food obsession may cost him his life.
10:15 My Cat From Hell 9/5s.
My Therapy Cat Needs Therapy. Jackson helps a veteran with PTSD whose therapy cat is stressing him out. Plus, Bartholomew is not only tearing up the furniture but also a marriage.
11:05 Animal Cribs 1/1s.
Tricked Out Cat Castle. Designer Antonio Ballatore and his team build a cats-only treehouse. Linked to the family room, Taffy and her ten-year-old owner can now play in style.
11:55 Meet The Orangutans 1/1s.
Episode 1. Follow the lives of orphaned orangutan babies as they are brought to the world's oldest orangutan sanctuary in Borneo. Toddlers are wheel-barrowed in for lessons in life.
12:25 Meet The Orangutans 1/2s.
Episode 2. One orphan is new on the scene, and needs another, more experienced one to help them bed in. The babies are at high risk from parasites ingested from the ground.
12:50 Meet The Orangutans 1/3s.
Episode 3. The orphaned orangutan Peanut is one of the newest and youngest arrivals at the sanctuary. He has made friends with Beryl, but he is not feeling very well.
13:20 Meet The Orangutans 1/4s.
Episode 4. The orphans are learning how to make important relationships. Mui Mui and Anne have become inseparable, but now Anne is pregnant, and she needs to be separated.
13:45 The Last Alaskans 1/3s.
Winter Is Coming. To prepare for the unforgiving season when temperatures drop to -50, everyone must search for the one animal large enough to feed a family through winter.
14:40 The Last Alaskans 1/4s.
Everything Is Hungry. Winter has finally arrived. While Bob deals with the ramifications of crashing his plane, Heimo must find a way to cross a newly frozen river.
15:35 Wildest Europe 1/4s.
Forests and Woodlands. Explores the wildlife of Europe's astonishing woodland and forested habitats, including Europe's third largest predator, the Eurasian lynx.
16:30 Lone Star Law 4/14s.
Back In The Wild. Game Warden Benge returns after a life-threatening injury. Along the coast, fishermen get caught with too many sharks and a protected turtle gets relocated.
17:25 Dr. Jeff: Rocky Mountain Vet 5/12s.
Family Reunion. Shelter volunteers drive from Kansas hoping the team can save a tiny rescue dog. Plus, Dr. Jeff's cousin asks for the vets to visit Tennessee to provide free care.
18:20 Animal Cribs 1/1s.
Tricked Out Cat Castle. Designer Antonio Ballatore and his team build a cats-only treehouse. Linked to the family room, Taffy and her ten-year-old owner can now play in style.
19:15 My Cat From Hell 9/4s.
Lucifer The Cat. Jackson helps a single mum whose cat, Pickles, is terrifying her kids. Plus, he works with Lucifer, a cat whose devilish food obsession may cost him his life.
20:10 My Cat From Hell 9/5s.
My Therapy Cat Needs Therapy. Jackson helps a veteran with PTSD whose therapy cat is stressing him out. Plus, Bartholomew is not only tearing up the furniture but also a marriage.
21:05 Alaskan Bush People 4/4s.
Call To Duty. Noah invents an ingenious device to rid their homesite of moles. Billy gives daughter Rain major responsibility as barn construction goes full bore at the ranch.
22:00 Jeremy Wade's Dark Waters 1/1s.
Alaska's Lost River Kings. Fisherman and adventurer, Jeremy Wade, travels to Alaska to discover what has happened to the king salmon - the power athletes of the salmon world.
22:55 Crikey! It's the Irwins 1/1s.
Steve's Legacy Continues. Steve Irwin's son Robert follows in his footsteps. After months of training, it's time for him to solo feed the most notorious croc at the Australia Zoo.
23:50 Crikey! It's the Irwins 1/2s.
Tiger Eyes. Hunter the tiger is being sedated for his annual eye check, allowing Terri to get close. Bindi puts on a birthday party for Minibus - the Zoo's oldest Wombat.
00:45 Wildest Europe 1/1s.
Land Of Ice And Snow. Explores the wildlife of Northern Europe's frozen frontier, from the golden eagle in Scotland's Cairngorms to the polar bears of Norway's Svalbard Archipelago.
01:40 Wildest Europe 1/2s.
Rivers, Lakes And Oceans. Discovers the wildlife of Europe's waterways, including the world's only underwater spider, the European river otter, and the Danube delta's golden jackal.
02:30 Lone Star Law 4/12s.
Saving The Herd. Game Warden Eddins assists the local police with an animal cruelty case. Plus, Richards responds to a trespassing dispute and Roraback relocates a snapping turtle.
03:15 Lone Star Law 4/13s.
Stray Bullets. Gerry investigates a situation involving stray bullets while checking teal hunters along the border fence. Plus, turtle hatchlings are released on South Padre Island.
04:00 Animal Cribs 1/1s.
Tricked Out Cat Castle. Designer Antonio Ballatore and his team build a cats-only treehouse. Linked to the family room, Taffy and her ten-year-old owner can now play in style.
04:45 Treehouse Masters 5/1s.
Treehouse Z. Pete connects with old friends to build them a Zen-like sanctuary in the trees. The team stays calm in constructing a retreat with a view of the Blue Ridge Mountains.
05:30 How Do Animals Do That? 1/11s.
Episode 11. Experts test to see if wild wolves are smarter than domestic dogs with an interesting experiment. Plus, can spiders really fly? And, how do polar bears keep warm?
05:55 How Do Animals Do That? 1/12s.
Episode 12. Experts look at why drowned ants don't drown. Plus, why don't woodpeckers get headaches? And, how does a 15-foot octopus escape through a three-inch hole?
Family Reunion. Shelter volunteers drive from Kansas hoping the team can save a tiny rescue dog. Plus, Dr. Jeff's cousin asks for the vets to visit Tennessee to provide free care.
07:00 Dr. Jeff: Rocky Mountain Vet 5/13s.
A Wild Ride. Dr. Jeff has been helping pets around the world for 30 years. He remembers some of the most special, inspiring and important cases he has taken on.
07:48 Lone Star Law 4/14s.
Back In The Wild. Game Warden Benge returns after a life-threatening injury. Along the coast, fishermen get caught with too many sharks and a protected turtle gets relocated.
08:36 Lone Star Law 4/15s.
Bucks And Bow. Boone receives an anonymous tip about a hunter who illegally shot a deer. Plus, McGee questions a man for being in possession of venomous copperhead snakes.
09:25 My Cat From Hell 9/6s.
Guilt Stricken Guardian. Jackson needs to find a way to help a distressed cat's uncontrollable spraying. Plus, can he get a guilty guardian to stop feeding her diabetic cat lasagne?
10:15 My Cat From Hell 9/7s.
Baby The Bully. Jackson meets a bully cat who is holding all the female cats hostage, causing them to hide in the bathroom. Plus, he meets a therapy cat who volunteers for charity.
11:05 Animal Cribs 1/2s.
Condo Cat Creation. Antonio transforms a cramped condo for two cats and a rescue dog. His team builds personalised spaces into the furniture, and install a 20 ft climbing wall.
11:55 Meet The Orangutans 1/5s.
Episode 5. Gelison arrived at Sepilok at just one year old, and was traumatised from losing his mother. While settling in better, his skiving antics and bully-boy tactics are pushing limits.
12:25 Meet The Orangutans 1/6s.
Episode 6. It's feeding time for the residents of Sepilok, and the orangutans are well cared for. However, they need to learn to find food themselves, and this can be tricky.
12:50 Meet The Orangutans 1/7s.
Episode 7. Chiquita was only two months old when she arrived at Sepilok sanctuary. Now three years old, her surrogate attachment to one of the staff is causing developmental issues.
13:20 Meet The Orangutans 1/8s.
Episode 8. There's a baby boom at the sanctuary as new arrivals mix with news of more on the way. The dominant male known as C.I.D is thought to be father of all offspring, but perhaps not?
13:45 Crikey! It's the Irwins 1/3s.
Giraffe Road Trip. Terri, Bindi and Robert prepare Croc One, Steve Irwin's research ship, for a special mission to release an endangered sea turtle back into the wild.
14:40 Crikey! It's the Irwins 1/4s.
Robert, King Of Cobras. Robert follows in Steve's steps wrangling Utah, a highly venomous King Cobra. A vet from the zoo's hospital, Dr. Amber, visits Tandora to treat wild Koalas.
15:35 My Cat From Hell 9/6s.
Guilt Stricken Guardian. Jackson needs to find a way to help a distressed cat's uncontrollable spraying. Plus, can he get a guilty guardian to stop feeding her diabetic cat lasagne?
16:30 My Cat From Hell 9/7s.
Baby The Bully. Jackson meets a bully cat who is holding all the female cats hostage, causing them to hide in the bathroom. Plus, he meets a therapy cat who volunteers for charity.
17:25 Dr. Jeff: Rocky Mountain Vet 5/13s.
A Wild Ride. Dr. Jeff has been helping pets around the world for 30 years. He remembers some of the most special, inspiring and important cases he has taken on.
18:20 Louisiana Law 1/6s.
Deer In The Headlights. Agents confront a group of duck hunters who are spotted killing non-game birds. A trespassing investigation leads to a dangerous encounter.
19:15 The Zoo: San Diego 2/9s.
Abigail The Incredible. Staff feel the pressure as a century-old Galapagos tortoise undergoes surgery. And, an orphan koala bear gets a special birthday surprise.
20:10 Wild Costa Rica
Explore the incredible creatures that inhabit Costa Rica, one of the most ecologically diverse places on earth. Meet the rare and secretive ocelot and puma, and much more.
21:05 Chasing Ocean Giants 1/1s.
Dominica. Patrick travels to the volcanic island of Dominica in the Caribbean. Whilst there he captures an epic hunt between a sperm whale and a diamondback squid.
22:00 Whale Wars 2/1s.
The Sound of Ice. The Sea Shepherds head back to Antarctica and locate the Japanese whaling fleet in record time - only to lose them in an ice field. Can they find them again?
22:55 Crikey! It's the Irwins 1/3s.
Giraffe Road Trip. Terri, Bindi and Robert prepare Croc One, Steve Irwin's research ship, for a special mission to release an endangered sea turtle back into the wild.
23:50 Crikey! It's the Irwins 1/4s.
Robert, King Of Cobras. Robert follows in Steve's steps wrangling Utah, a highly venomous King Cobra. A vet from the zoo's hospital, Dr. Amber, visits Tandora to treat wild Koalas.
00:45 Wildest Europe 1/3s.
The Alps. Discovers Europe's highest mountain range and one of its largest intact ecological ranges, home to specialised animal species including the alpine ibex and the grey wolf.
01:40 Wildest Europe 1/4s.
Forests and Woodlands. Explores the wildlife of Europe's astonishing woodland and forested habitats, including Europe's third largest predator, the Eurasian lynx.
02:30 Lone Star Law 4/14s.
Back In The Wild. Game Warden Benge returns after a life-threatening injury. Along the coast, fishermen get caught with too many sharks and a protected turtle gets relocated.
03:15 Lone Star Law 4/15s.
Bucks And Bow. Boone receives an anonymous tip about a hunter who illegally shot a deer. Plus, McGee questions a man for being in possession of venomous copperhead snakes.
04:00 Animal Cribs 1/2s.
Condo Cat Creation. Antonio transforms a cramped condo for two cats and a rescue dog. His team builds personalised spaces into the furniture, and install a 20 ft climbing wall.
04:45 Treehouse Masters 5/2s.
Apres Skihouse Treehouse. Pete designs a ski chalet treehouse that comes complete with a secret bedroom and a double-sided fireplace to keep guests warm both inside and out.
05:30 How Do Animals Do That? 1/13s.
Episode 13. Experts test to see how anteaters eat so quickly. Plus, male humpback whales can sing for several days, but how do they do it with no vocal cords and why do they do it?
05:55 How Do Animals Do That? 1/14s.
Episode 14. Experts test how impressive dogs' noses are at picking up scents even under water. Plus, how and why do fireflies glow? And, how do ostriches run so fast?
A Wild Ride. Dr. Jeff has been helping pets around the world for 30 years. He remembers some of the most special, inspiring and important cases he has taken on.
07:00 Dr. Jeff: Rocky Mountain Vet 6/1s.
Miracle On The Freeway. Dr. Jeff treats a dog after it jumped from a fast-moving car on the highway. Plus, a couple of rescue guinea pigs cause a stir around the office.
07:48 Treehouse Masters 5/6s.
Bon-Appe-Treehouse. Pete and his gang cook up a dining room treehouse for a French restaurant. Surrounded by fields, the aim is to bring the Provence countryside to guests.
08:36 Crikey! It's the Irwins 1/1s.
Steve's Legacy Continues. Steve Irwin's son Robert follows in his footsteps. After months of training, it's time for him to solo feed the most notorious croc at the Australia Zoo.
09:25 Crikey! It's the Irwins 1/2s.
Tiger Eyes. Hunter the tiger is being sedated for his annual eye check, allowing Terri to get close. Bindi puts on a birthday party for Minibus - the Zoo's oldest Wombat.
10:15 My Cat From Hell 4/2s.
Roommates From Hell. 95-year old Callie survived WWII, but her daughter fears she won't be able to survive her cat, Allie, and her vicious attacks. Can Jackson Galaxy help?
11:05 My Cat From Hell 4/3s.
Penny Hates Puck. New cat Penny viciously attacks gentle and senior cat Puck - what is the problem? Plus, a cat's stuffed animal causes odd behaviour that confuses its owners.
11:55 Lone Star Law 4/22s.
Pelicans And Poachers. In Smith County, Clarke and Temple stop a forest fire and help a distressed pelican. Plus, Bailey and McMahen stop a boater with controlled substances onboard.
12:50 Lone Star Law 5/1s.
Small Town Troubles. It's springtime and the Wardens are extremely busy. A concerned citizen reports a hunter on his property and a fisherman is caught illegally catching oysters.
13:45 Animal Cribs 1/6s.
Senior Dog's Decked Out Dorm. Antonio and the team build make a mountain cabin safer for Chickie, a blind senior dog. Plus, they build a Japanese-inspired indoor dog lounge.
14:40 The Last Alaskans 2/3s.
Survival Mode. Preparations for winter continue and focus centres on finding food. Heimo seeks out caribou meat, while Tyler and Ashley score big game.
15:35 The Last Alaskans 2/4s.
Alone. Autumn continues in the bush as the Last Alaskans settle into wilderness solitude. Battling loneliness, Bob Harte welcomes a visitor to his cabin.
16:30 Wild Australia 1/1s.
Wild Australia - Part 1. Australia is one of the largest and most extreme wildernesses on earth. Here, the indigenous Aborigines have survived by observing and learning from nature.
17:25 Dr. Jeff: Rocky Mountain Vet 6/1s.
Miracle On The Freeway. Dr. Jeff treats a dog after it jumped from a fast-moving car on the highway. Plus, a couple of rescue guinea pigs cause a stir around the office.
18:20 Wild Australia 1/2s.
Wild Australia - Part 2. Australia is one of the largest and most extreme wildernesses on earth. Here, the indigenous Aborigines have survived by observing and learning from nature.
19:15 Crikey! It's the Irwins 1/11s.
Swimming With Manta Rays. Robert travels to the Great Barrier Reef to help conduct research on manta rays. Plus, the zoo's staff team up to save a baby wallaby struggling to survive.
20:10 Crikey! It's the Irwins 1/12s.
Pawing Terri's Heart. Terri attends the exam of Charlie the tiger to see if his tumours were successfully treated. And, Bindi helps develop a vaccine for Eden the Tasmanian Devil.
21:05 Sharks Of The Badlands
White sharks are infiltrating the waters off Cape Cod. Greg Skomal joins Kina Scollay in New Zealand to test new technology for shark detecting surveillance.
22:00 In Search Of Monsters 1/3s.
Mothman. A team of researchers seeks answers to mysteries surrounded the Mothman. They explore theories that the legendary cryptid is an abnormality in the evolutionary chain.
22:55 My Cat From Hell 9/4s.
Lucifer The Cat. Jackson helps a single mum whose cat, Pickles, is terrifying her kids. Plus, he works with Lucifer, a cat whose devilish food obsession may cost him his life.
23:50 My Cat From Hell 9/5s.
My Therapy Cat Needs Therapy. Jackson helps a veteran with PTSD whose therapy cat is stressing him out. Plus, Bartholomew is not only tearing up the furniture but also a marriage.
00:45 Crikey! It's the Irwins 1/1s.
Steve's Legacy Continues. Steve Irwin's son Robert follows in his footsteps. After months of training, it's time for him to solo feed the most notorious croc at the Australia Zoo.
01:40 Crikey! It's the Irwins 1/2s.
Tiger Eyes. Hunter the tiger is being sedated for his annual eye check, allowing Terri to get close. Bindi puts on a birthday party for Minibus - the Zoo's oldest Wombat.
02:30 Wildest Europe 1/1s.
Land Of Ice And Snow. Explores the wildlife of Northern Europe's frozen frontier, from the golden eagle in Scotland's Cairngorms to the polar bears of Norway's Svalbard Archipelago.
03:15 Wildest Europe 1/2s.
Rivers, Lakes And Oceans. Discovers the wildlife of Europe's waterways, including the world's only underwater spider, the European river otter, and the Danube delta's golden jackal.
04:00 The Last Alaskans 1/1s.
No Man's Land. It's fall in the Arctic National Wildlife Refuge and that means the caribou are migrating. Plus, a bear ransacks a cabin, creating a food shortage.
04:45 The Last Alaskans 1/2s.
The Hunted. Surviving 400 miles from civilization boils down to one thing, finding food. Heimo pursues the animal that can feed him and Edna for months, a moose.
05:30 How Do Animals Do That? 1/15s.
Episode 15. What are lions saying when they roar? Plus, what are leaf cutter ants doing with all the leaves they collect? Experts answer these questions and more!
05:55 How Do Animals Do That? 1/16s.
Episode 16. Why do domestic cats find it so hard to get down from trees, and how have two jungle cats evolved? Plus, why do kiwi birds lay monster-sized eggs compared to their size?
