interbreed interbreed /ˌɪntərˈbriːd/

verb

1. Breed animals or plants using parents of different races and varieties  ( cross , crossbreed , hybridise [British] , hybridize , interbreed )
   breed animals or plants using parents of different races and varieties
    Cross a horse and a donkey
   cross a horse and a donkey
    Mendel tried crossbreeding
   Mendel tried crossbreeding
    These species do not interbreed
   these species do not interbreed