Male dog fertility has drastically decreased over the past 26 years, a University of Nottingham study finds[ref]Lea, R., Byers, A., Sumner, R., Rhind, S., Zhang, Z., Freeman, S., Moxon, R., Richardson, H., Green, M., Craigon, J. and England, G. (2016). Environmental chemicals impact dog semen quality in vitro and may be associated with a temporal decline in sperm motility and increased …
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