Add to Fav Like Not Like 10 Amazing Dog Facts That Even Cat Lovers Will Enjoy Dogs are capable of understanding upto 250 words & gestures, can count upto 5, and can perform simple mathematical calculations. Dogs don't enjoy being bugged as much as humans. 2 stray dogs in Afghanistan have saved over 50 soldier lives during the war. The Beatles song "A Day In The Life" has an extra high-pitched whistle, audible only to Dogs. It was recorded by Paul McCartney for his Shetland sheepdog to enjoy. One of Michael Vick's former fighting dogs, Leo, went on to be a therapy dog who comforted dying children. Service dogs are trained to know when they are on duty. When their harness is on, they know it's business time. Tiger Woods stuttered as a child and used to talk to his dog until he fell asleep, trying to get rid of it. There is a dog-shaped building in New Zealand. The wetness of a dog's nose is essential to determine where a smell is coming from. Hyenas aren't actually dogs. They are more closely related to rats.