Welcome Party. The brothers hold a party to welcome a red panda, two cheetah brothers and some sand lizards to the zoo - but will Cam be able to collect the wriggly lizards? Also in HD. [S]
Power Players. Meet the zoo's powerful animals as Sonika the Asiatic lioness gets a grip in a tug-of-war and Tyler takes on Marion the sulcata tortoise in a contest of strength. Also in HD. [S]
Eco-Heroes. Looking to help protect the planet, Cam, Tyler and Aaron take inspiration from the zoo's animal eco-heroes, including pygmy marmosets, Amur tigers and orangutans. Also in HD. [S]
Go Slow. The brothers learn about animals that like to take things slowly. They discover the top speed of a giant African land snail and see just how slow a sleepy sloth can get. Also in HD. [S]
Cool Creatures. The brothers visit Belgium's Pairi Daiza Zoo to meet pandas, walruses, penguins and the golden takin, all animals that have adapted to survive in the coldest climates. Also in HD. [S]
Hello Goodbye. The brothers are excited to say hello to a new, mystery animal, but sad to say goodbye to Inka the adorable black jaguar. Also in HD. [S]
Team Vet. The One Zoo Three animals are due some check-ups. Is Ta'iri the leopard losing his eyesight? And what's the best way to take the entire meerkat mob to the vets? Also in HD. [S]
Strong Swimmers. The brothers celebrate some of the zoo's strongest swimmers. Can Cam tempt the jaguars into their new pool? And who will win the tapir food raft challenge? Also in HD. [S]
Saving Species. The brothers are at San Diego Zoo Safari Park to learn about saving endangered species. They come face to face with rhinos, giraffes and the California condor. Also in HD. [S]
Super Size. The brothers visit San Diego Zoo to meet some supersized species including the huge Komodo dragon, the majestic Andean condor and the awe-inspiring polar bears. Also in HD. [S]
Sports Day. The One Zoo Three brothers join keeper Briony at the cat sanctuary, where the animals limber up for a wild day of sport and Jua the serval jumps for gold. Also in HD. [S]
The Zoosical. The One Zoo Three brothers are on a mission to compose a zoo musical using the sounds of the animals, and Tyler takes on a breathtaking challenge with an anaconda. Also in HD. [S]
Family Legacies. Cam helps Amur leopard Luka look for love, Tyler reunites with Khumbu the snow leopard, and Aaron sees the rare black hornbill chick fly the nest. Also in HD. [S]
Animal Superstars. Find out if supersized anaconda Optimus Prime welcomes his new housemate. Tyler tries to outjump a springy serval cat, and Amur leopard Xizi has a big operation. Also in HD. [S]
Veggie Day. The brothers are delivering healthy greens to all the animals. Tyler's puzzle gives the lemurs food for thought - and who will win the bug hotel build challenge? Also in HD. [S]
Sensational Smiles. Tyler makes gummy treats for the pygmy marmosets, Cam takes Baikal the white tiger to the dentist, and Aaron attempts to stop the camels chewing their home. Also in HD. [S]
Reduce Recycle. The brothers check up on how green they have been. A tiger gets stuck into an old barrel, and a ring-tailed lemur has a special, sparkly snack. Also in HD. [S]
Super Mums. The brothers celebrate Mother's Day. It's a big step for snow leopard cub Shen, jaguar Kiera has a break from daughter Inka, and is Tilly the red panda having a baby? Also in HD. [S]
Perfect Partners. It's Valentine's Day at the zoo, and the brothers prepare some tasty romantic treats for the animals - but will Cam find out who his secret admirer is? Also in HD. [S]
Dream Team. The brothers play musical statues with a dwarf crocodile, search for hidden lizards and spread a new sandpit for the camels. Also in HD. [S]
Cat Moves. The brothers help prepare for the arrival of Luka, a rare Amur leopard. Aaron gives snow leopard cub Shen a health check - and will Kadera the jaguar rise to her challenge? Also in HD. [S]
Sports Day. The One Zoo Three brothers join keeper Briony at the cat sanctuary, where the animals limber up for a wild day of sport and Jua the serval jumps for gold. Also in HD. [S]
The Zoosical. The One Zoo Three brothers are on a mission to compose a zoo musical using the sounds of the animals, and Tyler takes on a breathtaking challenge with an anaconda. Also in HD. [S]
The Reopening. The zoo has its grand reopening to the public and the brothers recall the incredible story of how their family zoo came to be. Also in HD. [S]
The Tigers. The brothers celebrate the opening of their biggest and best enclosure yet, a huge new home for Siberia and Aleena the Amur tigers. Also in HD. [S]