American toads make AWESOME pets, their care is incredibly easy and they have a lot of personality. They don't need supplemental heat [unless your house is very cold of course] only a little daily misting and any lighting you feel like providing. I raised Moony up from a tiny, nickel-sized toadlet I found in the street one night. American toads adapt to a cushy indoor life incredibly well, she was eating from my hands after a day!! I think its because they're naturally unafraid of predators. The only downsides I can think of is that no one breeds them so you have to resort to wild caught most of the time [best to gather them in the spring and early summer, when there's thousands of tiny toadlets and the majority of them will not survive, so its much less harmful than removing one old enough to breed], you can't really take them to a vet due to it not being, yknow, strictly legal to keep them in all states [but the cops haven't busted down my door yet], and the males WILL croak. One of my friends has a male who calls every single night.
Aside from that toads are wonderful pets!! They don't do much but if you keep pacmans than thats probably something you're used to by now hehehe