When this Great Dane was experiencing a phantom pregnancy, her owner decided to comfort her with a small Chihuahua as a companion, but she had no idea that they'd become an inseparable duo. When ...

A Chihuahua puppy has melted hearts all over the internet after a video of him taking a nap on top of his big brother went viral on social media. The hilarious post, which quickly gained millions of ...

Demi Moore's Chihuahua Pilaf made a new larger-than-life friend this weekend. During the Toronto International Film Festival, The Friend star Naomi Watts arranged for the tiny dog to meet her costar ...

What happens when one of the smallest dog breeds meets one of the largest? One heck of a height differential! Two canine cuties, a Great Dane and a Chihuahua, recently got together for the very first ...

A couple in Nevada thinks their dog may be part horse. Rocko stands at 40 inches from paw to shoulder and is about 7-feet tall when on his hind legs. Owners say the 160-pound Great Dane thinks he's a ...

Modern dog breeds come in a mind-boggling array of shapes and sizes—from Chihuahua to Great Dane, corgi to greyhound, pug to ...

Domestic dogs are among the most diverse mammals on the planet. From the tiny chihuahua to the towering great dane, the ...

“A reduction in skull size for dogs is first detectable between 9,700–8,700 years ago, while an increase in size variance ...