10 Fun Facts About Dogs

1. Dogs can understand up to 250 words and gestures.
2. A dog's sense of smell is 10,000 to 100,000 times stronger than a human's.
3. The oldest dog breed is the Saluki, which originated in the Middle East over 7,000 years ago.
4. Dogs have a third eyelid called the nictitating membrane that helps protect their eyes.
5. The average lifespan of a dog is 10-13 years.
6. Dogs can't sweat like humans; they cool down through panting and through their paw pads.
7. The largest dog breed is the English Mastiff, which can weigh over 200 pounds.
8. The smallest dog breed is the Chihuahua, which can be as small as 4 inches tall.
9. Dogs have a natural instinct to howl at sirens and other high-pitched sounds.
10. A group of dogs is called a pack.