Dogs today come in a mind- blowing array of shapes and sizes, from the diminutive pug, Pekingese and Pomeranian to the grand Irish Wolfhound, Great Dane and Saint Bernard. But when did this diversity ...

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 ...

From the towering Great Dane to the feisty little Chihuahua, all dogs are brothers under the skin. Now, researchers have uncovered a reason why the animals wearing that skin vary so much in size. Dogs ...

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 ...