Assorted Land Animals
There are millions and millions of animal species on our planet. No one knows the exact number. At Oxford University in 1988, Robert May, an evolutionary biologist observed that the diversity of land animals increases as they become smaller. He hypothesised that scientists have probably found most of the species of big animals, like mammals and birds. He used their diversity to further extrapolate the diversity of smaller animals. He ended up with an estimate 10 to 50 million species of land animals. The number is debatable but there are already over one million species of insects identified and many more millions waiting to be studied.|
The largest land animal is the African bull Elephant. It can reach over 12 feet at the shoulder and weigh over 10 tons. On the other end of the scale, the smallest land animal is the Bumblebee Bat. An adult bat weighs about 2 grams and measures just over one inch in length.
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