1. It takes 63 days for puppies to be born from the time of mating.
2. Puppies are born both deaf and blind. Their eyes begin to open between 10 and 14 days. They begin to hear soon after but it takes a while longer before they have complete sight and hearing.
3. Puppies begin getting their puppy teeth when they are about three weeks old. They’re very sharp!
4. Puppies begin getting their adult teeth between four and seven months. They’re very likely to chew on things during this period.
5. Dogs are thought to have descended from wolves in southeast Asia at least 14,000 years ago.
6. Some of the oldest breeds of dogs are the Afghan Hound, the Chow Chow, the Lhasa Apso, the Pekingese, the Shar Pei, the Shih Tzu, the Tibetan Terrier, the Saluki, the Basenji, the Akita Inu, the Shiba Inu, the Samoyed, the Siberian Husky and the Alaskan Malamute.
7. Most dogs have a double coat of hair -- an undercoat that provides insulation and an outer coat of guard hair.
8. There are no completely hypoallergenic dogs. All dogs have at least some hair that can attract dander and allergens. Some dogs and breeds attract less than others.
9. There are currently 74.8 million pet dogs in the United States. Some 44.8 million U.S. households own a dog.
10. Seventy-eight (78) percent of the owned dogs in the United States are spayed or neutered.
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