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WE CARE |
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INTELLIGENCE |
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Dogs are deployed in diverse roles across the globe, in areas such as search-and-rescue; law enforcement;
guards for livestock, people or property; herding; Arctic exploration sled-pullers; guiding the blind and acting
as a pair of ears for the deaf; assisting with hunting, and a great many other roles which they may be trained
to assume. Dogs are descended from wolves, and are also packing animals, making them easier than other
animals to train because dogs’ instincts are to obey. Most dogs rarely have to deal with complex tasks and are
unlikely to learn relatively complicated activities (such as opening doors) unaided. Some dogs (such as guide
dogs for the visually impaired) are specially trained to recognize and avoid dangerous situations. |
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SIGHT |
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Dogs were thought to be dichromats and thus, by human standards, color blind. It is now known that dogs
can’t see the colour red very well. Dogs with long noses have a ‘visual streak’ which runs across the width
of the retina and gives them a very wide field of excellent vision, while those with short noses have an ‘area
centralis’ - a central patch with up to three times the density of nerve endings as the visual streak - giving
them detailed sight much more like a human’s. Some breeds, particularly the best sight hounds, have a field
of vision up to 270° (compared to 180° for humans), although broadheaded breeds with short noses have
a much narrower field of vision, as low as 180°. |
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HEARIING |
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Dogs detect sounds as low as the 16 to 20Hz frequency range (compared to 20 to 70 Hz for humans) and
above 45 kHz (compared to 13 to 20 kHz for humans), and in addition have a degree of ear mobility that helps
them to rapidly pinpoint the exact location of a sound. Eighteen or more muscles can tilt, rotate and raise or
lower a dog’s ear. |
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SMELL |
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Dogs have nearly 220 million smell-sensitive cells over an area about the size of a pocket handkerchief. it now
seems to be well established that dogs can distinguish two different types of scents when trailing, an air scent
from some person or thing that has recently passed by, as well as a ground scent that remains detectable for a
much longer period.
In any event, it is established by those who train tracking dogs that it is impossible to teach the dog how to
track any better than it does naturally; the object instead is to motivate it properly, and teach it to maintain focus
on a single track and ignore any others that might otherwise seem of greater interest to an untrained dog. |
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