I have had a cottontail rabbit since he was 2 weeks old, my dog had found the nest and killed all of them except him because I got to him in time. He is now 9 months old. I was wondering would he be alright to be released back to the wild? I have had him around my other pets and is not afraid of them, can that be a problem for him?

I have had a cottontail rabbit since he was 2 weeks old. My dog had found the nest and killed all of them except him because I got to him in time. He is now 9 months old. 

I was wondering - would he be alright to be released back to the wild? I have had him around my other pets and he is not afraid of them, can that be a problem for him?