Dogs were first domesticated from wolves approximately 17,000 years ago. There are now hundreds of breeds that vary greatly in size, color, and patterns. Dogs have stronger senses of smell, hearing, and touch than humans. Dogs view their human companions as members of their pack and fill various working roles in society, earning them the title of "man's best friend."

1. Dog
Facts:
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Dogs were first tamed from wolves about 17’000 Info Box
years ago.
Dogs heights range
There are now hundreds of breeds with a great from just a few
degree of variation. centimeters (such as
the Chihuahua) to
Colors range from white to black, with reds, grays, and nearly one meter
browns occurring in a tremendous variation of patterns. (such as the Irish
Wolfhound).
An adult dog has 42 teeth.
Dogs can smell about 1’000 times better than humans.
A dog’s whiskers are touch-sensitive hairs called vibrissae.
They are found on the muzzle, above the eyes and below Amazing
the jaws, and can actually sense tiny changes in airflow.
Humans have 5 million
Dogs’ sense of
hearing is more smell-detecting cells but
than ten times stronger than a human’s. dogs have more than
220 million. The part of
the brain that interprets
smell is also four times
larger in dogs than
in humans.

2. Dog
Facts:
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As a general rule you can say that small dogs live longer Info Box
than bigger dogs.
It is a myth that
Dogs are highly social animals, which accounts for their trai- dogs are color blind.
nability, playfulness, and ability to fit into human households
They can actually
and social situations.
see in color,
just not as well
as humans.
The loyalty and devotion that dogs show
as part of their natural instincts as pack
animals, closely mimics the human idea
of love and friendship, leading many dog owners
to view their pets as full family members.
Did you know?
their human companions
Dogs seem to view
as members of their pack, and make few, if Never feed
chocolate to a dog!
any, distinctions between their owners and fellow canines.
Chocolate contains
a substance known
Dogs fill a variety of roles in society and are often trained as
as theobromine
working dogs. (similar to caffeine)
which can kill dogs
Dogs have lived and worked with humans in so many roles or at the very
that their loyalty has earned them the unique title of „man‘s least make them
best friend.“ violently ill.

3. Dog
Quiz:
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True or False?
1. Dogs were domesticated from wolves.
2. Adult dogs have 24 teeth.
3. Laika was the first dog in space.
4. Dogs are pack animals.
5. Dogs are not color blind.
Did you know?
In 1957, Laika, the Info Box
dog, became the
first living being in Strongest Bite:
space via an A dog can bite with
earth satellite. 74 kg of force
whereas a lion
can do 426 kg!
Answers:
1. T, 2. F (they have 42 teeth), 3. T, 4. T, 5. T