Country of origin: England Bred for: Ratting terrier Group: Terrier Color: Any shade of red, wheaten (pale yellow or fawn), black and tan, or girzzle (a mixture of black or red with white hairs) Life span: 12 to 15 years Grooming Needs: Brush coat and trim nail tips weekly Coat: Hard, wiry, straight outercoat with a softer, downy undercoat Size: 9-10 inches, 11-12 pounds Temperment: Alert, friendly, courageous, curious Training: Moderate to high Energy: Moderate Children: Good with older children but will not tolerate teasing Compatibility with other dogs: Good but may chase smaller dogs Health Concerns: Mitral valve disease, a degenerative disease of a heart valve, luxating patellas (slipping kneecaps), and hip dysplasia, a degenerative joint disease