Posts tagged ‘Eyelids’

Do fish sleep?

Fish

Yes, fish sleep.  Because fish have no eyelids, they cannot close their eyes—and it may look as though they never sleep.  Many fish sleep by simply remaining very still in the water.

Others lie on the bottom, resting upright or on their sides.  And a few others wriggle into the sand on the floor of the body of water in which they live.

In this way, fish rest their bodies as you and I do when we sleep.  If you happen to see a fish lying almost motionless in the water, it is probably asleep.  Fish don’t sleep as soundly as humans do, and the slightest disturbance will wake them.–Dick Rogers

What is a horned toad?

Horned Toad

The horned toad is mis-named.  It is not a toad but a lizard.   The name “toad” comes from the toad like shape of its squat body.

The horns of the horned toad are sharp spines that stick out from its head.  Smaller spines cover its scaly body.  These spines give the creature its bristly appearance.

The spines protect the horned toad from being swallowed by hungry animals.  The horned toad dwells throughout the dry plains and deserts of North America.  A fully grown horned toad may be only a few inches long.

The color of the horned toads skin matches the sandy color of the desert and makes it hard to see.

When threatened, the horned toad quickly buries itself in the sand.  If it falls to do so in time it may squirt a thin yet of blood out of its eyelids to drive away its attack.

In some places, the horned toad is protected-because it eats harmful insects. – Dick Rogers