The elephant brain weighs about 6,000g.
274
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
46
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
A domestic cat can sprint at about 31 miles per hour.
274
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
A dork is a whale's penis.
327
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17