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camels
1. Camels
2. There are two different types of camel.
3.
4. Arabian camels (dromedaries) have a single hump.
5.
6. They are found in North Africa as well as Arabia.
7. Bactrian camels come from the Gobi Desert and other dry parts of Asia.
8.
9.
10. These hairy beasts have not one hump, but two.
11.
12. A camel’s hump does not contain water, as some people think.
13. In fact, it is a store of fat which the animal can live off when food is scarce.
14. An Arabian camel’s hump shrinks as the fat inside is used up in hard times.
15.
16. A bactrian camel’s humps flop over.
17. The huge feet of camels help them to walk on sand without sinking into it.
18. A camel's foot can be as big as a large plate.
19.
20.
A camel's head has builtin sun-visors to help keepthe bright sunlight out of
its eyes. There are broad
ridges of bone above each
eye. These stick out far
enough to shield the eyes
when the sun is overhead.
The ears of camels are
small to make it harder for
sand to get in them.
21.
22. Desert winds often blow sand into the air.
23. To protect their eyes, camels have long eyelashes that catch most of the sand.
24.
25. If sand gets into an eye, a camel has a third eyelid to get it out.
26.
27. Like a windshield wiper on a car, this extra eyelid
28. moves from side to side and wipes the sand away.
29.
The eyelid is very thin, so a camel can seethrough it. In sandstorms, camels often close
their third eyelid and keep walking. You
might say that a camel can find its way
through a sandstorm with its eyes closed.
30.
To keep sand fromblowing into their noses,
camels can shut their
nostrils. When there is no
sand blowing in the wind,
a camel can open its
nostrils (A) and breathe
through its nose. When
the wind starts to whip up
the sand, the camel just
closes its nose (B).