XX male pseudohermaphroditism in a horse.J Am Vet Med Assoc. 1995 Jul 01; 207(1):77-9.JA
A pseudohermaphrodite horse with aggressive stallion-like behavior and ambiguous external genitalia was gonadectomized. The hypoplastic gonads removed from the abdomen were confirmed by histologic examination to be testes. Examination of blood and fibroblasts revealed a 64,XX karyotype.