A recently published study in Royal Society Open Science sheds light on certain dog breeds’ heightened susceptibility to cancer, challenging common assumptions about the role of size in this risk. The research, led by Leonard Nunney, an evolutionary biologist at the University of California, Riverside, delves into which breeds are more likely to develop cancer and explores whether size plays a decisive role in the occurrence of the illness.
The study singles out flat-coated retrievers, Bernese mountain dogs, and Westies as breeds with an elevated likelihood of developing cancer during their lifetimes. Contrary to expectations, the research challenges the notion that larger dog breeds consistently face a higher risk of cancer.
Leonard Nunney shared insights with ABC News, emphasizing that unlike humans, where cancer risks often correlate with increasing body size, the same pattern doesn’t hold true for dogs. The canine population exhibits a vast size range, from chihuahuas to mastiffs or Great Danes, making it essential to consider various factors.
Nunney highlighted an intriguing finding, indicating that larger dogs, often assumed to be more prone to cancer, actually face a lower risk than their smaller or medium-sized counterparts. This surprising observation is attributed to the fact that larger dogs tend to have shorter lifespans and, consequently, a decreased likelihood of developing cancer due to their premature mortality.
The study’s implications extend beyond identifying at-risk breeds. Nunney emphasized that the findings and the model used in the research offer valuable insights into understanding the genetic changes influencing specific cancers in dogs. Dogs serve as an excellent model for unraveling the genetic factors contributing to cancer susceptibility, making this research a significant step in comprehending and addressing cancer risks in canine populations.
