Baby Camel: Mum，why do we have such a huge hump？

Mum Camel:They’re for storing fat out in the desert.

Baby Camel: Why do we have hooves，then？

Mum Camel: So our feet don’t sink into the hot sand.

Baby Camel: Why do we have these long，fluttery eyelashes？

Mum Camel: To keep the sand out of our eyes in a sandstorm.

A moment later...

Baby Camel: Right. So why do we have all this stuff if we live in the London Zoo？