Use of naltrexone for treatment of psychogenically induced dermatoses in five zoo animals

Naltrexone was used successfully in controlling self-mutilation behavior in 3 zoo animals from 2 families (Felidae and Sciuridae). It had no effect on 2 other zoo animals from 2 families (Canidae and Ursidae). Long-term administration of glucocorticoids was not satisfactory in controlling the behaviors, and concerns were raised about potential long-term adverse effects, especially with regard to fertility. Detrimental effects were not noticed in any of the zoo animals treated with naltrexone. Two males successfully sired healthy offspring.