My name is Rex and I'm a grown up puppy; I'll be 13 years old this year. People often think I'm a Bernese Mountain Dog but I'm actually such a mutt that a DNA test came out "inconclusive!" Though I loved herding sheep when I was younger my favorite things these days are food, tummy rubs, and the word "walk," which I can hear even if someone whispers it from far away. I don't feel the need to bark much and am so mellow I once slept through an earthquake. I like it when my family hosts parties because I get lots of attention and make sure the floor stays clean. They say there's never been a dog loved as much as me. That sounds egotistical but they might be right.