The popular Siamese who appeared in Cross-Country Cat (1979), etc., copes with competition: a new puppy with whom his family is wholly smitten. Striving for attention, Henry practices balancing on the clothesline, becoming so adept that he's able to run along the telephone wire to rescue the puppy when it climbs out onto the roof. The tried-but-true formula, told with practiced skill, is endearingly extended in the soft, precisely detailed pencil-and-watercolor illustrations. (Picture book. 4-8)