These Are The Most Massive Animals On Earth

Mastering the Mastiff 

This dog is big in more ways than one. In some cases, Tibetan Mastiffs can weigh over 280 pounds. One of this breed was sold for $1.5 million in 2011. Big bucks for the big dog!

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The More You Know

  • A whale’s heart beats only nine times a minute.
  • The world's oldest known breed of domesticated dog dates back to 329 BC.
  • Think your stomach growls? Ghost crabs literally growl using teeth in their stomachs.
  • Sharks kill fewer than 10 people per year. Humans kill about 100 million sharks per year.
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Post originally appeared on Upbeat News.