*"The truth is.this series may well inspire a new generation of animal scientists and conservationists."--The Horn Book, starred review "While the cartoonish artwork, lively tone, and dry humor will give this easy appeal for kiddos, it's still dense enough with science that they'll come away with plenty of facts to spout on their next trip to the zoo."--Booklist "Kids will enjoy the humor as the cute hippos are personified."--School Library Journal.