From dogs on the BART to dogs on Amtrak, here's what you need to know Even a company named Greyhound prohibits animals from coming. Greyhounds make wonderful pets, but knowing the greyhound's traits as a breed and understanding the background of a former racer are necessary when. Service animal means any guide dog, signal dog, seizure response dog, psychiatric service dog, sensory signal dog or other animal individually trained to assist. He serves as the Studio's sports and recreation section expert. When choosing a breed, think about how the dog vocalizes — with barks or howls — and how. Greyhounds have a reputation for high energy levelsbut in reality their favorite pastime is sleeping. This dog is large, sturdy, and built for serious action. While some disabilities and needs may be obvious, others are not and you may be served by several different representatives of Greyhound along the way.