The Cocker Spaniel is one of the world's most well-loved dogs and is most recognizable from the movie Lady and the Tramp.

From barking at vacuums to earning a Canine Good Citizen award, this 12-year-old Sheltie’s story won readers over.

Tiny, but feisty, chihuahuas are super energetic. Known as "purse dogs," they're between five and eight inches tall and weigh ...