I don't really have a favourite. It would be easier for me to list animals I don't like.
I really like my pet rabbit though.
He's so friendly, and active and fun loving. He likes to play games with me too.
(namely trying to jump on my arm, so he can pull and tug on the end of the sleeve of my top).
I think Barn Owls are such beautiful, elegant creatures, as are most birds of prey.