Animal whys?

Everything from why do gorillas thump their chests? To why do flamingos eat upside down?

Gorilla beating chest

Gorillas have many ways in which they communicate, both verbally and non verbally. 

Why does pigeons bob their heads when they walk?

Lots of birds bob their heads while walking. Head bobbing is a unique feature in birds.

 

Why do bears hibernate?

When autumn turns to winter and the temperature dips, the food sources for the wild animals becomes very scarce. 

 

Why don't woodpeckers get headaches?

If you hit your head against a tree trunk all day long, you probably wouldn't feel too great and neither would your brain!