research Problems in Evaluating Chronic Toxicity of Contraceptive Steroids in Dogs 25 citations, September 1977 in “Journal of Toxicology and Environmental Health” High doses of some contraceptive steroids cause health issues in dogs, but their relevance to humans is unclear.
research Pharmacological Control of Reproduction in Dogs and Cats January 2019 Different drugs are used to manage breeding, prevent or end pregnancy, and treat reproductive issues in dogs and cats.