My husband likes the critters, especially the more interactive ones. You wouldn't know it at the store though, since he grumbles and complains the entire time on the rare occasions when I drag him to the LFS with me...but then the next morning usually brings with it a "you should get [strange thing]" or "can we have [bizarre animal]?" A couple days ago I had my usual morning coffee/tea-making stupor broken by "can we set up a Jack Dempsey tank?"