Here are some interesting facts about these unique creatures.
1 Imprint of a nose
Dog's nose print is as unique and one of a kind as human's fingerprint.
2 The body temperature
The body temperature of dogs is higher than human’s (usually 38-39 degrees Celsius). Sweat glands of these animals are on the paws, so that the dogs never sweat. That is why dog's body temperature in the car or any other room seems higher than normal.
3 Acuty of vision
Under normal conditions, dog’s visual acuty does not exceed human’s, but in the evening, thanks to a special membrane, dogs much better distinguish objects than people.
4 Auditive and smell acuity
It's not a secret that dogs can smell much sharper (10-100 thousand times) than people. However, not everyone knows that the frequency sound range perceived by the dog is also wider. By the way, these animals easily determine which side they hear a beeping sound. The upper limit of the perceived frequency of a dog is 8 kHz, man’s is 2 kHz.
5 Number of teeth
Puppies have got 28 teeth, adult dogs have got 42.
6 Sleep
Dogs have two phases of sleep as humans: slow and fast (during the fast phase, the animals quickly move their eyes). When the dog sleeps and you notice that it moves its feet, that means it has a dream.
7 Heartbeat
Large breeds of dogs have a heartbeat at a frequency of 60-100 per minute (as a human has), small breeds have 100-140 beats per minute.
8 Tastebuds
A dog has about 1,700 tastebuds. For comparison, a human has 9000, cats have 473.
9 Color sense
Many people think dogs take reality only in black and white. However, it is not true. It is widely thought, dogs take the world in blue and dark-blue colors. Also green-yellow and grayish shades are present in this palette.
10 Intelligence
Dogs can take about 250 words and gestures, and count to five. Their level of development corresponds to the intellect of two years old child.
