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Today I'm gonna talk about some characteristics from the dogs for example about the hearing, smell and vision.
The dogs have a highly developed sense of smell and hearing, the smell being the main sensory organ. There are approximately 800 breeds, that is to say, more than any other animal, which vary significantly in size, appearance and temperament, they present a variety of colors and types of hair according to the breed of dog. They have a great relationship with humans, who are:  for pets, guard animals, working dogs, hunting dogs,   or guide dogs for example. It is one of the most popular pet animals, probably second only to the cat.
About the vision; the dog's vision is developed for hunting, they don't have a great visual acuity of details, but have excellent perception of movement. they have excellent night vision because to the use a reflective screen inside the eye. They also have a color vision equivalent to red-green color blindness in humans
It has been shown that dogs are able to distinguish your owner from others persons at distances of more than a mile.
About the hearing; they detects very low sounds compared to humans, also have a degree of ear mobility which allows them to quickly determine the exact source of a sound.
Also, they can locate the source of a sound a lot faster than a human and detect sounds from a distance four times greater than humans.
About the smell, the dog brain is dominated by a mainly olfactory crust. The dogs have between 125 and 220 million olfactory cells. Dogs can distinguish odors at much lower concentrations than the humans.
I love dogs.