especially Oscar (and Fred when he was alive).
So is it possible to have more of a reaction to one rat than another? I've noticed that when I just handle Mokey I get a little itchy but when I handle Ari and Mushroom that's when I get a lot of bumps. Since usually I play with Ari and Mushroom together I'm not sure if both of them are causing the hives or if one is causing it more than the other.