EUGENE M. MCCARTHY, PHD GENETICS
To the author's knowledge, the following is the only information bearing on hybridization in this family:
Bradypus tridactylus [Pale-throated Three-toed Sloth]
× Bradypus variegatus [Brown-throated Three-toed Sloth] A parapatric contact zone, which is often a sign of ongoing hybridization, exists in Venezuela, but the author has not as yet encountered any explicit report of hybridization.
Bradypus variegatus [Brown-throated Three-toed Sloth] See: Bradypus tridactylus
By the same author: Handbook of Avian Hybrids of the World, Oxford University Press (2006).
Human Origins: Are we hybrids?
On the Origins of New Forms of Life
Cat-rabbit Hybrids: Fact or fiction?
Georges Cuvier: A Biography
Prothero: A Rebuttal
Branches of Biology