The Basenji dog is the only dog that is not able to bark.
4
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A giraffe's kick is so powerful that it can decapitate a lion.
216
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 group of pugs is called a grumble.
10
When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
25