Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Cats sleep for 70% of their lives.
8
A 42-foot sperm whale has about 7 tons of oil in it.
209
There are approximately three chickens for every human on Earth.
13
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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