Lead animal scientist Antonia Mataragka of the Agricultural University of Athens has conducted a study that explores the increase in chronic diseases in the animal kingdom. These same diseases are found in both animals and humans.

For example, obesity is widespread in dogs and cats. Being overweight leads to a greater number of cats who develop diabetes. About 20% of pigs develop osteoarthritis, beluga whales have an increase of gastrointestinal cancers and farmed Atlantic salmon suffer from cardiomyopathy. It doesn’t end there, up to 25% of wildlife living in polluted estuaries are developing liver tumors. Even

Marine turtles and fish are developing more tumors.

Mataragka hopes that her research will encourage more coordinated monitoring of both animals, people and ecosystems to identify early warning signs by recognizing shared causes of chronic illnesses and reduce disease risks for both animals and people.

Antonia Mataragka. Beyond Infections: The Growing Crisis of Chronic Disease in Animals. Risk Analysis, 2025; DOI: 10.1111/risa.70130

Society for Risk Analysis. “Animals are developing the same chronic diseases as humans.” ScienceDaily. ScienceDaily, 17 November 2025. <www.sciencedaily.com/releases/2025/11/251116105735.htm>.