The prolific Dr. Fox has already helped us understand dogs and cats; here he reviews that coverage, extends it to other house pets--fish, birds, furry animals--and shows why love is not enough, but the whole effort is poorly conceived. The dog and cat advice, roughly half the book, has been imparted more fully before. The information on fish, birds, gerbils, rabbits, etc. is helpful but skimpy. And the last fourth of the book is a miscellany that has little to do with Understanding Your Pet. For Dr. Fox uses this section to propound Humane Society views opposing cruel zoo conditions, explorative films like Jaws, animal products (alligator bags), animal farming (veal, battery hens), and even zoomorphic usages like snake-in-the-grass. Considering the availability of comparable advice elsewhere, this one is safely skippable.