Though only one mixed breed can compete with the average life span of a purebred rat terrier, which hovers around 19 years, many still can provide years of puppy love. The data team at PetBreeds ...

We are guessing that December is a rat terrier/Chihuahua mix. She is a bit larger than an average Chihuahua at about 17 pounds. Her approximate DOB was Dec. 10, 2008, and her date of arrival was ...

Lucky is a 5-year-old rat terrier mix who weighs in at a medium-sized 32 pounds. He's a sweet, playful dog who loves attention but takes some time to warm up to people. His favorite activity is ...

Now healthy and in foster care, this 8-year-old Jack Russell-rat terrier mix is described as a "perfect little doll baby" and gets along well with others. Adopt Monroe (ID No. 1477070) spayed ...