An article published by The Wildlife Society notes that the coyote sterilization program undertaken to stop coyote/red wolf hybridization has been successful in limiting genetic introgression in red wolves. This finding could have significant implications for the future of the U.S. Fish & Wildlife Service’s red wolf recovery program in northeastern North Carolina. To learn more, see Coyote Sterilization Program in N.C. Protects Red Wolves.
The same study is also referenced in the article Effort to prevent ‘coywolf’ hybrids is working, study finds, which appears in Science Magazine.