One of the largest publishers of pet books (usually sold in paperback in pet stores) has designed ten hard-cover titles--exemplified by these two--for young children. Appealing color photos, quality paper, and brief but adequate instructions on selection, care, and feeding make these serviceable, although the information is not as detailed as that provided by the T.F.H. paperback guides. Generally, these recommend getting ""appropriate food"" from a pet store and ""asking an adult to take the pet to a veterinarian if it appears ill."" Guinea Pigs is somewhat limited in that it omits information on breeding or raising young. Koi (the large, colorful carp usually kept in outdoor pools) provides some interesting history on the naming and developing of different varieties. Vrbova says that pet carp can live 70 years; the oldest koi in Japan is believed to be 226 years old. It's doubtful that young children will have the resources to raise koi; a seven-year-old is shown here sharing this hobby with his dad. While these don't replace the standard T.H.F. guides, they are attractive additions. Brief glossaries.