-Dogs are the most popular pets on the planet
-They evolved from a now-extinct species of wolf
-They can learn over 100 words and gestures
-Dog noses are at least 40x more sensitive than ours
-Dogs have 18 muscles to move their ears
-Dogs mark their territory with glands in their paws
-Dogs are more aggressive when being walked by a man.
- Dogs can be right-pawed or left-pawed.
-Your dog is as smart as a two-year-old child.
-Smaller dogs live longer.
-puppies can not see or hear when born