overbred
/ˈoʊvərbred/ (OH-vuh-bred)
Definitions
1. adjective
bred in excess, especially to the point of physical or mental defect, or to produce offspring with desirable traits
“The breeder was criticized for creating overbred dogs with health problems.”
2. noun
an animal that has been bred in excess
“The shelter was filled with overbred cats that needed a new home.”