Bizarre Animal Friends

Doggy Deerest: More unbreakable bonds are formed, this time between a fawn and a shaggy dog, and a four-year-old boy with autism brought out of his shell by a flock of chickens. 7+ S4, ep 4

Love at First Sight: Meet a Hawaiian surfer who loves hanging out with his pet pig, a blind woman with a guide horse and, finally, an immobilised cat protected by a dachshund. (S4, ep 2) 7+

Cheetah Cub, Puppy Love: Friendship can spring from the unlikeliest of places - meet a cheetah who is best buds with a Rhodesian ridgeback, and a pair of cat-cuddling canines. (S4, ep 6) 7+

A Pig and his Pooch: A look at the most surprising animal friendships, including the world's smallest stallion and his canine pal and two rhinos that are guarded by sheep. (S5, ep 1) 7+

Puppy Want a Parrot?: A look at the most surprising animal friendships, including a parrot that's palled up with a pooch and a husky that has raised a kitten. (S5, ep 2) 7+