Abstract: A process and composition for controlling fecal hair excretion and trichobezoar formation in animals such as cats and rabbits is provided and includes feeding the animal a composition comprising from about 10 to about 42 wt % crude protein, from about 4 to about 30 wt % fat, from about 1 to about 25 wt % total dietary fiber, and a supplemental fiber source. The supplemental fiber source is present in amounts which provide from about 1 to about 13 weight percent of supplemental total dietary fiber. The animal is maintained on the diet for a sufficient period of time to control fecal hair excretion and trichobezoar formation.