@dogfacts

National Geographic's Dr. Brady Barr measured a dog's average bite force at 320 pounds of pressure per square inch.

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Thomas Jefferson helped enact a dog tax in Virginia, because he was annoyed that dogs were killing his sheep.

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The most popular dog breed in the UK is the Labrador Retriever.

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Dog nose prints are as unique as human finger prints and can be used to identify them.

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Obesity is the top health problem among dogs.

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Three dogs survived the sinking of the Titanic: a Newfoundland, a Pomeranian, and a Pekingese.

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A dog's tail is an extension of their spine, and contains bones and muscles.

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A dog's average body temperature is 101.2 degrees.

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The border collie or sheep dog is often considered to be the most intelligent breed of dog some of them have been trained to recognize the words for up to 1,000 objects and retrieved them by verbal command.

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All dogs can be traced back 40 million years ago to a weasel-like animal called the Miacis which dwelled in trees and dens. The Miacis later evolved into the Tomarctus, a direct forbear of the genus Canis, which includes the wolf and jackal as well as the dog.

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Greyhounds appear to be the most ancient dog breed. "Greyhound" comes from a mistake in translating the early German name Greishund, which means "old (or ancient) dog," not from the color gray.

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The average lifespan of a dog is 10-13 years.

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Big happy "helicopter" tail wagging is one sign of a really nice dog

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When dogs copulate, it is very normal for them to get stuck together and it may last for up to 45 minutes.

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Pregnancy can be prevented by spaying the female dog, this involves removing both the ovaries and the uterus.

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