In 2003, Dr. Roger Mugford invented the "wag-o-meter" a device that claims to interpret a dog's exact mood by measuring the wag of its tail.
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Animal Facts
RandomPlanet earth is home to around 1 million known species of animals. From the bizarre to awe-inspiring, I present to you the 100 most amazing facts about animals that will blow your mind.
Fact # 84
In 2003, Dr. Roger Mugford invented the "wag-o-meter" a device that claims to interpret a dog's exact mood by measuring the wag of its tail.
