At Highland Wildlife Park the camel enclosure gets a spring clean and polar bear Walker goes on a diet. Edinburgh Zoo prepares to welcome back giraffes after a 17-year absence.

The zoo’s oldest penguin, Mrs Wolowitz, is injured after a fight. In Koala Territory it’s time for the weekly weigh in. The sun bears entertain the crowds while hunting for food.

It's busy in the reptile section with snake feeding and the arrival of some geckos. An elderly zebra has worrying dental problems and there's a sad discovery.

There is flight training for the birds of Animal Antics and excitement as the birth of tiger cubs draws closer. Meanwhile, the chimps show off their brain power by playing computer games.

There is excitement at Penguins Rock as the first chicks arrive, a tiny tenrec has a nasty bout of tooth trouble, and there is happiness and heartache for the takin herd keepers.

There is cheeky chimp action at the Budongo Trail exhibit, the sloths get acquainted at a predictably slow pace, but there is hope for speedier results with tigers Botzman and Dominika.

Keepers await the arrival of a baby pygmy hippo, and a pair of snow leopards is introduced - but is it a love match?

Keepers and vets work through the night with hopes for a giant panda pregnancy, and it’s an anxious time as a pair of cassowaries are introduced. Meanwhile, Gelada baboon Negus goes into surgery.

A major breed-and-release conservation project is under way to save Scotland’s wildcats. Elsewhere, a young bird shatters her leg and Yang Guang proves giant pandas are as clever as they are cute

It’s the new breeding season at Penguins Rock. There are high hopes for a new polar bear cub at Highland Wildlife Park. Sumatran tiger Lucu is due his annual booster vaccination.