Chinchilla hates boyfriend

My male chinchilla(Meucci) is remarkably sweet to me and shy yet sweet to most everyone else with the exception of my boyfriend. I thought perhaps Meucci was jealous of the attention I give to my boyfriend, but I give a lot of attention to anyone I have have over. Is he trying to be dominant? He's drawn blood from my boyfriend on multiple occasions and he's even gotten enraged and bit /me/ as my boyfriend walked by the cage. That certainly hasn't happened under any other circumstances.



Why all the hate?