most people can't believe how smart rats are. i have to say, i think the rats are better trained than my dog! i have taught them to "stand" (stand up on their hind legs), come (run over to me from across the room), "go to bed" (run into their cage after playing on the desk), "leave it" (when they are annoying the cat), and a cool game where i put a dixie cup on a string and hang it off their cage. they then pull up on the string (a good 8" pull) to get the treats.