Dogs are really smart. They can guide, guard, sniff stuff out and cheer us up, but few are as smart as Thor, a tiny Pomeranian, who lives on a canal boat near The Zoo. He can not only speak in perfect Cat to his feline shipmate, Willoughby, but remarkably, he can also grunt, squawk, squeal and growl in the languages of all the animals living nearby. He likes to carry messages and gossip between their cages and fearlessly chats to the tigers who call him 'Snack'. When two pugs, Miss Toast, a keen blogger and her adventurous friend Gertrude come to stay on the boat, all four animals get caught...