Dog Fertility Is Declining Due To Environmental Contaminants; Can Same Be Said For Humans?

Canine fertility has plummeted over the course of three decades, according to a study from researchers at the University of Nottingham. Published in Scientific Report, the study found a sharp decline in sperm quality in stud dogs.

The 26-year-long study took samples from five breeds of stud dogs (Labrador retriever, golden retriever, curly coat retriever, Border collie and German shepherd) at an assistance dogs breeding center. An analysis counted sperm in the collected semen.