The largest-ever study of dog behavior, tracking more than 47,000 pets, reveals how breed, size, sex, and age shape canine traits. It provides insights that could help identify early signs of illness ...

Smaller dogs can live up to twice as long as their larger counterparts, research from Eötvös Loránd University in Hungary shows. And yet, this longevity is accompanied by an increased rate of canine ...

Smaller dogs may live twice as long life as their larger counterparts. But does this size difference also impact how dogs age in terms of behavior and cognitive abilities? Based on the data of 15,000 ...

A study of more than 25,000 U.S. dogs and 238 breeds has linked dog size to varying patterns of risk for health conditions over the course of a dog’s lifespan. Yunbi Nam of the University of ...

Question: I have an 8-year-old dog that I notice isn't getting around as well as it used to. Could arthritis be causing this? I know that 8 years old is not young, but I didn't think it was that old.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. On this we can all agree: The lifespan of a ...

A study of more than 25,000 U.S. dogs and 238 breeds has linked dog size to varying patterns of risk for health conditions over the course of a dog's lifespan. A study of more than 25,000 U.S. dogs ...