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2006-08-20 02:50:53 · 27 answers · asked by monstermania_05 1 in Pets Cats

27 answers

they have three sets of eyelids

2006-08-20 02:54:51 · answer #1 · answered by hotlady002 2 · 2 2

Now you know about cat eyelids. Our domestic cats are all descended from a small African wildcat, a desert creature. The third eyelid was probably very useful to help keep sand out of the eyes when there was a "storm".

I have not sure how many species of animal has this protection for the eye. I feel pretty sure that the camel does.

When my cat Spookie came to my lap one Sunday evening and was seeming kind of down I noticed that the third eyelid was drawing over his eyes. Though I was inexperienced at the time I took this as another sign that something was wrong with him. He went to the emergency vet. His urethra was blocked and he was being poisoned by the toxins building up in his body.

2006-08-20 03:21:50 · answer #2 · answered by old cat lady 7 · 0 0

Three.

Cats' upper and lower eyelids, like those of humans, sheathe the eyeballs. For further protection, all cats have an opaque, white third eyelid, called the nictitating membrane, between the lower lid and inside corner of each eye. This layer helps moisten the eye and clear dust from the surface of the cornea. When dozing, this third eyelid closes, perhaps to act as a shade. As soon as the sleeping cat is alerted by any sound, the nictitating membrane flicks back to the inside corner of the eye.

2006-08-20 03:03:36 · answer #3 · answered by Anonymous · 1 0

Cats' upper and lower eyelids, like those of humans, sheathe the eyeballs. For further protection, all cats have an opaque, white third eyelid, called the nictitating membrane, between the lower lid and inside corner of each eye. This layer helps moisten the eye and clear dust from the surface of the cornea. When dozing, this third eyelid closes, perhaps to act as a shade. As soon as the sleeping cat is alerted by any sound, the nictitating membrane flicks back to the inside corner of the eye.

Hidden from view behind the outer eyelids of a sleeping cat and barely noticeable in the corner of the eyes while the cat is awake, the nictitating membranes are sometimes visible in felines that doze with open eyelids. While most cats do sleep with their eyes completely closed, some rest with their eyes partially open.

Cats with very short noses, such as Persians, may not be physically able to close their eyes completely because the eyes bulge more, causing the nictitating membranes to be visible during sleep.

The membranes also are seen when cats blink, which, quite mysteriously, they do infrequently — sometimes as little as once every few minutes.

2006-08-20 02:56:49 · answer #4 · answered by My Evil Twin 7 · 5 1

3

2006-08-20 02:56:03 · answer #5 · answered by WenckeBrat 5 · 1 2

Cats have three eyelids.

The third eyelid is actually that tiny triangle of pinkish or whitish tissue that is sometimes visible in the corner of your cat's eye. It's called the haw, or nictating membrane. The haw will raise automatically and then move sideways across the eye to protect or lubricate its sensitive surface. If your cats is in ill health, undernourished or, is on the verge of catching a disease, the presence of the haw is a pretty good clue. Usually, it's a signal to get your cat to a vet.

2006-08-20 03:59:40 · answer #6 · answered by Turtle 7 · 0 0

Cats have a total of three eyelids. Cats have a third eyelid, the nictitating membrane, which is a thin cover that closes from the side and appears when the cat's eyelid opens. This membrane partially closes if the cat is sick; although in a sleepy, content cat this membrane is often visible. If a cat chronically shows the third eyelid, it should be taken to a veterinary surgeon.

2006-08-20 03:00:58 · answer #7 · answered by wittdtjr1809 2 · 1 0

It had outer eyelids which have a blink purpose, and an inner eyelid which cleans the eye surface. If this inner eyelid, called the HAW, is visible, your cat needs to see a vet as this denotes illness.

2006-08-20 13:19:08 · answer #8 · answered by k0005kat@btinternet.com 4 · 0 0

When kitty isn't feeling well, her eyes are a dead giveaway. They'll be dull and glazed appearing, and you may see the "third eyelid" appearing. This inner eyelid is called a nictating membrane, and serves to protect the eye from dryness and/or damage. When a cat is sick, the third eyelid will partially close, which is a signal to get him to the vet immediately.

Read the article.. very interesting!

http://cats.about.com/cs/catmanagement101/a/how_cat_work_3.htm

2006-08-20 02:58:18 · answer #9 · answered by sassy 6 · 2 0

Three - the 'third eyelid' is the one you can sometimes see going across the eye, looking like thin pink skin. It tends to stay across the eye when the cat is ill.

2006-08-20 02:57:38 · answer #10 · answered by mad 7 · 2 0

5

2006-08-20 02:54:28 · answer #11 · answered by Ronaldo 2 · 0 4

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