A male sea lion is in rut and a flamingo gets help with a broken ankle.

The vet team helps a snow leopard and the keepers welcome a baby penguin.

The staff tries to match two kiwis and a king cobra arrives at the zoo.

A snow leopard is unable to eat and a fox prepares to meet a group of kids.

The staff brings toads to Africa and a giraffe tries out new equipment.

Dave, a kangaroo suffering from chronic arthritis, tries cryotherapy. A large group of rambunctious gharials are trained to patiently wait for their food. And, a tiny pygmy marmoset gives birth to an even tinier baby.

Two tigers are introduced and a 3,000-pound rhino gets a pregnancy check.

The brown bears keep tearing up their exhibit, leaving zoo staff scrambling for a solution. Armani the aardvark gets treated for a tooth infection which has dampened her enthusiasm for digging. And, a group of burrowing owls prepare to move.

Trust and experience are put to the test when an elephant requires delicate veterinary treatment from her keepers. Endangered pink pigeons need all the help they can get to produce offspring. And Monty the adorable otter needs to visit the dentist.

The slow loris has a tiny window for breeding, so staff anxiously help a potential pair connect. The veterinary team develop ground-breaking techniques to treat the stoic penguins. And an okapi with a limp gets a helping hand.

The last polar bear in NYC is showing his age so staff make sure he gets all the attention he needs. A trio of red ruffed lemurs prepare for their debut. And, a new exhibit is constructed for the hellbender, a giant amphibian with a bad reputation.

An African wild dog is pregnant and the gibbons get a new tree to explore.

The ingenuity of zoo staff is put to the test as they devise a treatment for a newborn snow leopard cub struggling to walk. And a group of surprisingly adorable Rodrigues fruit bats are trained for a big move.

The squirrel monkeys play hard-to-get and a pair of Komodo dragons meet.

Surgery on a silverback gorilla's broken canine reveals a more serious medical issue. Is love in the air for two Birds of Paradise, Glory and Holiday? And, dozens of venomous tarantulas keep the staff on their toes.