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Because they are a prey animal, sheep require excellent
senses to enhance their chances for survival in the wild.
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EYES
Sheep
depend heavily on their vision. They have excellent peripheral
vision and can see behind themselves without turning their heads.
However, they have poor depth of perception. They cannot
see immediately in front of their noses. Some vertical vision may
also have been sacrificed in order to have a wider field of vision.
For example, they probably wouldn't be able to see a predator in
a tree.
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COLORS
Contrary
to previous thought, sheep and other livestock see colors, though
their color vision is not as well developed as it is in humans.
Sheep will react in fear to new colors.
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EARS
Sheep
have excellent hearing. They can direct their ears to the direction
of the sound. Sound arrives at each ear at slightly different times,
with a small difference in amplitude. Sheep are frightened
by high pitched and loud noises, such as dogs barking or firecrakers.
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SMELL
Sheep
have an excellent sense of smell. They are very sensitive to what
different predators smell like. Smell helps rams locate ewes in
heat and dams locate their lambs. Sheep also use their sense of
smell to locate water and determine subtle or major differences
between feeds and pasture.
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TASTE
The
sense of taste in sheep is probably not as important as the other
senses. However, sheep have the ability to differentiate different
feedstuffs and taste may play a role in this behavior. When presented
with a variety of feeds, sheep will select certain feeds over others.
Sheep will select different types and species of plants than other
livestock.
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TOUCH
Since
the sheep's body is covered with wool or coarse hair, only the nose,
lips, mouth, and maybe ears readily lend themselves to touching
behavior. Touching is important to the interaction between sheep.
Lambs seek bodily contact with their mothers and the ewes respond
to the touching behavior in many ways, including milk letdown in
response to nuzzling/suckling stimulus of lambs. When young lambs
sleep, they will seek out their mothers and lie close to them.
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Click
HERE to learn how a sheep's natural
instinct helps to protect it from predators.
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. . . New Words . .
Amplitude
- the strength or volume of a sound.
Depth
of perception - three-dimensional perception that is essential
for the ability of an individual to judge quickly and accurately
the speed and distance relationships between an object and the
individual.
Peripheral
vision - the seeing of objects displaced from the primary
line of site and outside of the central visual field. Also called
side vision.
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