10 Facts You Probably Didn’t Know About DogsSeptember 23, 2015
Did you know?
- The dog was one of the first animals to be domesticated by humans. Records estimate this could have been as early as 10,000 years ago.
- There are approximately 525 million dogs currently living on Earth. That’s as much as the total population of the United States, Canada, Great Britain, Germany, Italy, and France combined!
- There are more than 350 different breeds of dogs worldwide. Believe it or not, they are all members of the same species, Canis lupus familiaris, despite how different each breed looks from one another.
- Dogs only sweat from the bottoms of their feet. The only other way they can cool off is by panting.
- Dogs have approximately 100 different facial expressions, most of which are made with their ears.
- Dogs can vocalize in about 10 different ways.
- Contrary to popular belief, dogs aren’t color blind; they can see shades of blue, yellow, green and gray. The color red registers on as gray to them.
- Most dogs are capable of reaching speeds up to about 19 miles per hour when running at full speed. Some breeds, like the greyhound, can reach top speeds of up to 43 miles per hour – that’s 19.5 miles per hour faster than Usain Bolt, who currently holds the record for the fastest human at 23.5 miles per hour!
- Using their swiveling ears like radar dishes, experiments have shown that dogs can locate the source of a sound in 6/100ths of a second.
- Depending on the breed, a dog’s sense of smell is about 1,000 to 10,000,000 times more sensitive than a human’s. A human has about 5 million scent glands compared to a dog who has anywhere from 125 million to 300 million.