The Most Massive Animals Roaming Planet Earth

Wild Goldfish

Although goldfish don’t grow too large in captivity, they can grow to pretty enormous sizes in the wild. Most recently, a four-pound goldfish was discovered in the wild. They are actually considered a menace to wild habitats, and goldfish owners are urged to not release them into the wild.

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The More You Know

  • In total, there are 205 bones in the skeleton of a horse.
  • Pigs are considered to be the world’s fifth-smartest animal.
  • The swan has over 25,000 feathers in its body.
  • An octopus has three hearts.
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