Vets from the Royal Veterinary College are urging people not to buy pugs, as research shows flat-faced dogs are up to 50 times more likely to suffer from skin fold dermatitis.
Genetic mutations may have played a role in the domestication of dogs by lowering stress and making pups more comfortable with humans, according to scientists from Azabu University.
Researchers from Duquesne University in Pittsburgh found that dogs have similar muscles in their faces to humans, allowing them to form facial expressions close to our own.
Dogs May Have Evolved Puppy Dog Eyes to Capture Our Hearts, Scientists Find goodnewsnetwork.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from goodnewsnetwork.org Daily Mail and Mail on Sunday newspapers.