Well I have been working on "bonding" Sonora and Rusty in the hopes that I can put them together someday. I've had Rusty since summer and he and Sonora are side be side in separate pens. I figured since they have had a chance to get used to each other, I'd give bonding another try. I have already done everything "by the book." I've tried neutral territories, small spaces, putting them on chairs together, or putting them together in scary situations. Nothing works. Rusty is tramatized because his ears were bitten up sometime in his life, and he thinks he needs to defend himself against Sonora (who has no intentions of fighting with him) and starts boxing her.

Then she gets upset and fights back.
I was having some luck with letting them have the run of the apt. at the same time. They do fine with each other and long as Rusty has space to run away from Sonora. Usually she ignores him and does her own thing, but sometimes she wants to play chase with him and he gets scared and runs from her. Then she gets mad and if she catches him, she takes a chunk of fur out of his behind.

So obviously its not working out. Is there anything else I can do to help Rusty overcome his fears?