Well, I don't know about a bond with each one, but once I have had them for a while I do get to know what they like and don't like. I have a couple that have been so traumatized I don't know if they will ever really bond with a human being.
I know Sophie has more issues with her cage aggression if she doesn't have things to take her anger out on. If I don't keep up giving her paper to shred, cardboard to chew, things like that, she takes her anger out on me instead.
Charity still thinks if I reach towards her quickly she is getting hit, and will react by hitting back. She likes wood toys to chew, especially if she can throw it around at the same time.
Arthur loves plastic toys, like those hollow kid's building blocks that he can make holes in, and he gets all excited when I give him his hay in the morning and starts binking all over his cage.
Duke is mainly intersted in food, if his tummy is full nothing else matters, LOL. Although he does like wood toys with that sisal rope hanging off the end, he loves to gnaw that stuff off.
I could go on, of course, but that would take up the rest of the page! :biggrin2: