A pseudohermaphrodite American bison (Bison bison) behaved like an adult male when interacting with adult females, but like an adult female when interacting with adult males. Its chromosomes were a normal 60, XX and it had a uterus; but it had bilateral testes rather than ovaries. Skull measurements were intermediate between a bull and a cow. Gonadotrophs levels were typical of overiectomized domestic cows or steers.
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1 April 1993
Physical and Behavioral Findings in a Pseudohermaphrodite American Bison
Dale F. Lott,
Kurt Benirschke,
Jerry N. McDonald,
Clyde Stormont,
Terry Nett
Journal of Wildlife Diseases
Vol. 29 • No. 2
April 1993
Vol. 29 • No. 2
April 1993
American bison
Bison bison
Pseudohermaphrodite
sexual behavior