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2007-08-05 06:47:54 · 20 answers · asked by ALBSTERboomer 3 in Pets Other - Pets

20 answers

no eye deer.

2007-08-05 07:01:03 · answer #1 · answered by HaSiCiT Bust A Tie A1 TieBusters 7 · 2 0

Spiders have eight eyes, as do some other arachnids.

there are also Jelly fish, sea stars, and even some species of clams have dozens of eyes.

Among vertebrates (animals with a back-bone) the Tuatara (type of reptile from new zeland) has a third "eye" on the top of its head which really can only detect light. Like the tuatara, some salamanders and other amphibians have a third eye on top of there heads!

2007-08-05 06:53:23 · answer #2 · answered by windzilla 2 · 0 0

Cyclops
This multi-celled animal is called a Cyclops and is one of the easiest pond creatures to see and identify even with the naked eye. The female often carries a pair of egg sacs and is a fast swimmer, which you will find out if you try to catch it with a pipette (or eye dropper)! It possesses just one eye hence it was named after the Greek mythological creature of this name. http://www.microscopy-uk.org.uk/dww/pond/pondip1.htm

3 eyes
To understand where the Tuatara's "third" eye came from, scientists studied a small growth attached to the front of the reptile's brain - a gland called the pineal body. In some lizards, the part of the brain that is related to this pineal body is shaped much like an eye. It has a lens-shaped outer wall, and transparent covering, and a retina with pigment. Scientists think that this "pineal eye" does not help most lizards see, but in the Tuatara, the pineal eye is fully developed, giving the creature a "third eye" through which to see!
http://www.geocities.com/EnchantedForest/Creek/2102/AmazingAnimalFacts2.html

8 eyes
Jumping Spiders far exceeds that of most of its relatives or any other creature of equal size. Jumping spiders are active hunters, not the passive wait-until-it-comes-to-you predators like web-weaving spiders. When they see a prey from a distance, they can jump over 20 times their body length to pounce on an insect or another spider.Such an active lifestyle requires vision that excels. Little wonder then that natural selection favoured jumping spider ancestors with better visual systems — in this case with multiple sets of eyes. Jumping spiders use their 8 eyes to gauge distance and detect moving prey. http://ebiomedia.com/gall/eyes/many.html

Jelly Eyes:

1 eye?
A jellyfish or medusa is one of the simplest animals. It is equipped with a loose network of nerve cells called a nerve net, and it lacks a major concentration of nerve cells that could be called a brain. Nevertheless, a medusa, such as this Polyorchis, can use it's nervous system to respond to environmental conditions and adjust its behaviour to benefit food-getting or predator-avoiding. To observe the light in its environment it has simple eyespots at the base of each tentacle, each shielded by a patch of bright red pigment. The shield casts a shadow on the eyespot which helps the animal to determine its orientation and the surrounding light conditions.

40 eyes
An Army of Eyes:
Poke around any rocky seashore and you are likely to see a sea star, a member of the Phylum Echinodermata, the spiny-skinned animals. But will the sea star see you? Maybe, but probably not too clearly. In addition to spines on its skin and a wonderful adornment of other structures (see our gallery - Beauty is Skin Deep) sea stars have a small eyespot at the end of each arm. It's not a sophisticated eye, and probably capable only of detecting light direction and large shadows, but it is useful in helping the sea star to orient itself. While most sea stars have 5 arms, and thus 5 eyespots, one common North Pacific species, Pycnapodia helianthoides, regularly has 21 arms, and species in other parts of the world may have 40 or more eyed arms.

100 eyes
Scallops, the bivalve with the pretty ridged shell and delicious muscle, take the prize as one the animal kingdom's most "eyed" creatures. A single scallop can possess over a hundred eyes! The mantle is lined with small, blue eyes. Each eye has a lens and a retina which is attached to a branch of the optic nerve. Behind the retina is a reflective layer called a tapetum that bounces light back to the retina, enhancing the signal. The hundred or so eyes work together to alert the animal to changes in light and motion. Changes in light and motion and very rough images are registered on the retinas of the mollusc.

2007-08-05 07:10:25 · answer #3 · answered by Anonymous · 0 0

There's quite a lot of animals that have more then two eyes. Most spiders have at least four eyes and some eight, I think.
Most if not all mammals have two eyes.
My dogs got no nose, you know the rest of it.

2007-08-05 07:01:30 · answer #4 · answered by Hi T 7 · 0 0

I believe animals as humans Have only 2 , with the exception of a deformity.

Only insects have more/less

2007-08-05 06:50:46 · answer #5 · answered by mscute1lori 4 · 0 0

Sea stars have 20 to 40 eyes.
A single scallop can have over 100 eyes!

2007-08-05 06:52:02 · answer #6 · answered by Bad Kitty! 7 · 1 0

insects have compound eyes, which might be considered more than two.
my cat had an eye surgically removed and gets along fine.
lower animals can have none: worms, clams, oysters

2007-08-05 06:56:15 · answer #7 · answered by emenbensma 4 · 0 0

I had a cat with only one eye

2007-08-05 06:50:10 · answer #8 · answered by Anonymous · 0 0

I dont know about animals but I know a snake that has 3 nostrils.

2007-08-11 01:34:37 · answer #9 · answered by Anonymous · 0 0

We have removed several cats and dogs eyes after injuries - does that count

2007-08-05 10:10:57 · answer #10 · answered by Anonymous · 0 0

Spiders have 8.

Cyclops have 1.

2007-08-05 06:49:33 · answer #11 · answered by pagreen1966 3 · 1 0

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