Animal: Donny, 9-month-old male mastiff mix; No. 905276. Where: San Diego Humane Society, El Cajon Campus, 1373 N. Marshall Ave. Hours: 10 a.m. to 5 p.m. Tuesdays through Sundays. Adoption fee: $113; ...

One of the largest dog breeds in the world, male mastiffs can weigh up to 230 pounds and stand up to 36 inches tall, so what would you do if one decided to sit on you? One mastiff who regularly uses ...