Temperament: Friendly, Smart, Obedient AKC Breed Popularity: Ranks 17 of 193 Height: 12-14 inches Weight: 11-20 pounds Life Expectancy: 12-15 years Group: Terrier Group

DANVILLE, Calif. (KTVU) - A Danville couple is questioning the vetting process of walkers hired through a popular dog-walking app after home video appears to capture a man kicking and whipping their family pet. What makes them worry even more is that the on-demand dog-walking service, Wag, only conducts background checks on applicants once before they are hired and does not do continuous checks.