Q 01/05

Bats are the only mammals capable of what?

A) Echolocation

B) True, sustained flight

C) Hibernation

D) Seeing in the dark

Answer · why

B) True, sustained flight

Flying squirrels only glide. Bats make up about a fifth of all mammal species, with at least 1,500 kinds.

Q 02/05

Roughly what share of all mammal species are bats?

A) About 5%

B) About 10%

C) About 20%

D) About 40%

Answer · why

C) About 20%

They are the second-largest order of mammals after rodents.

Q 03/05

How many bat species feed only on blood?

A) One

B) Three

C) Twelve

D) About fifty

Answer · why

B) Three

The common, hairy-legged and white-winged vampire bats, all in Latin America. The 'spectral vampire bat', despite its name, eats other animals.

Q 04/05

What is draculin, found in vampire bat saliva?

A) A venom

B) An anticoagulant

C) A sedative

D) A digestive enzyme

Answer · why

B) An anticoagulant

It stops the victim's blood clotting while the bat laps it up, and it is being studied as a stroke drug.

Q 05/05

How many limbs does a spider have?

A) Six

B) Eight

C) Ten

D) Twelve

Answer · why

B) Eight

That is what makes them arachnids, not insects. Their body is fused into just two segments.