OK someone please help me. This is an old animated movie I'm not sure whether disney made it. There's a girl and her dad or grandfather and she gets a dog and one day their driving in the rain and he runs away and he finds a bunch of rabbits and they try to teach him to be a rabbit and he protects them. In the end he saves them from drowning or something. In the end when she finds him she gives him milk and you. Please help me I need to know its bugging me.

It's the Hungarian animated flick The Seventh Brother.