A dog is a domesticated animal. Based on recent studies on dogs, it has been said that there are 329 varied species of dogs. Dogs have a very powerful sense of smell and it has been found that it is at least 4 times more powerful than humans.
Labrador Retrievers, golden Retriever, beagle,and� Cocker spaniel are some of the friendliest dog breeds in the world. Norwegian Lundehund is the rarest dog breed in the world. According to Guinness World Records, a Portuguese dog named Bobi was crowned the world’s oldest dog ever at 30 years and 266 days old.