The 2 birds I had my cat was afraid of them. I would let them out and of course keep a close eye on Cubby he just liked to sit and watch them as soon as they flew around the house he ran to the bedroom to hide. He was so afraid of them which was very funny. A cat afraid of 2 small birds? So I was never worried about Cubby hurting them. He loved to sit and watch them sing and dance.