Books like Jenius: The Amazing Guinea Pig

This is a strange little book -- so strange that I'm not sure whether I liked it or not. I first read it when it came out because I loved Dick King-Smith's I Love Guinea Pigs. There's very little about real guinea pigs here.And the artist seemed to think that guinea pigs are the size of hamsters. They're not, they're much larger. A guinea pig (unless it's a day old) cannot fit in the palm of a child's hand, for example. I know it's a kid's book, but it rankled me. I've known about many guinea pigs that are abandoned or left at animal shelters because they "grew too large" or "couldn't be housetrained" or something silly like that. They're guinea pigs, not dogs or horses or dwarf hamsters. Guinea pigs are wonderful in and of themselves and don't need to learn circus tricks (the one on the cover cannot be taught to a guinea pig.)Also, I'm not sure what the moral of this story was (if there was one.) Don't boast -- even if you have something to boast about? Don't be too clever because no one likes a smart-ass? I'm left scratching my head (or cheek) here.