Inbreeding

Inbreeding is the production of offspring from the mating or breeding of individuals or organisms that are closely related genetically.

A Genetic Paradox: Inbreeding Can Be Beneficial in the Long Run

Inbreeding contributes to decline of endangered killer whales

Orcas in the North Pacific may be dying out due to inbreeding

Thanks to inbreeding, bulldogs and pugs may not exist much longer, experts say

Dammed Rivers Spell Peril, and Inbreeding, for Platypuses