The film opens in a barn with a mother cat who has given birth to kittens. One of the kittens is named Milo, and has a habit of being too curious and getting himself into trouble. He soon finds a pug puppy named Otis, and they become friends. They then look after Gloria’s chick, who thinks Otis is his mother. Otis convinces the chick that Otis is not his mother by acting tough on Milo and scaring the Chick. When Milo is playing inside a box floating in the river, he accidentally drifts downstream. Otis runs after Milo. Milo goes on many adventures, escaping one incident after another. He encounters no fewer than three bears; escapes from the desolate, raven-infested Deadwood Swamp; steals a muskrat from a vulpine cache; follows a train-track to the home of a female deer, who shelters him; sleeps in an Owl’s “dreaming nest”; stays for a while with a sow pig and her piglets; catches a fish, only to have it stolen by a raccoon; is mobbed by seagulls; and evades first the third bear, then a snake, only to fall into a hole. Otis, for his part, follows Milo throughout, usually only an hour behind and less than a mile out of range. Finally, the two catch up with one another while Milo is in the hole. Otis pulls him out by means of a rope. Milo and Otis are reunited, and soon find mates of their own: Joyce, a cat, for Milo; and Sondra, a pug, for Otis. After this they separate and raise puppies and kittens. They help each other’s families to survive the harsh winter and find their way back together through the forest to their barn, living together. (alternative titles: The Adventures of Chatran or A Kitten’s Story). —wikipedia
A few too many mini adventures in the middle and a little too little spotlight on Otis who is clearly the talented one - other than that, this is in all probability the world's most perfect movie.