Vet Shondie fights to save Tamascan puppy Leyla, Guy has a caesarean birth at a remote farm, David deals with elderly donkey Lerah, and Rebecca attempts to clip Squeaky the parrot's claws.

Vet Shondie needs to help two rescued grey seal pups, Guy operates on Bonzo the cat's hip, Tom completes dental work on mare Hallie, and chihuahua Zac needs an operation to sort a bladder problem.

For some animals, sound is key to survival. They use sound to hunt, defend, and escape. Great gray owls can detect voles beneath a foot of snow, kangaroo rats hear rattle snakes in the dark.

For some animals, sound is the key to finding a mate and to warn off the competition. Some sing the most melodious songs in nature to impress females. Some deep sea fish hum and bark their intentions.

This episode highlights the Belitsa Bear Reserve, the legends of the Rila Lakes and the ruins of an abandoned village on the Turkish-Bulgarian border where nature has been able to reclaim.

Migratory birds begin their annual journey south and like to stop off in the Belgium countryside; the gathering of cranes and their spectacular departure is a breathtaking spectacle.

Slovenia boasts a stunning variety of natural monuments, scenic landscapes and wildlife; the country has also been given top spot in a United Nations list of the most sustainable national lifestyles.

An old leopard queen is dead; when Thandi, the new queen, discovers the young cubs left behind, the fight for survival and for the crown of Djuma is on.

Dan O'Neill is on a mission to save the snow leopard. In Kyrgyzstan, there's a snow leopard that has never encountered humans. And in Mongolia, he tracks down the largest snow leopard ever recorded.