What if a dog's tail was more than just a part of his body that it can wag? What if its tail became his best friend, someone it could share the bone it chews with, someone to play table tennis, someone to spend the whole day and whole night with? That could really, finally be a happy end and animation makes it possible. But every happy end has its dark spots and if your tail becomes a self-reliant character there is a chance that he also wants his own cat to chase!