Pet dogs have a sense of odor that is more than about a million times more powerful than that of a human being. Their brains are specialized for recognizing and recognizing fragrances. In fact, the portion of their brain devoted to odor is 40 times more than that of a human being. Because of this exceptionally excellent sense of smell, pet dogs depend on their sense of smell to analyze the world, just like how most humans greatly rely on their sense of sight.
The sense of hearing of pets has to do with 10 times more precise than that of a human being. By the time their sense of hearing is fully developed, canines can hear 4 times the range of a human with typical hearing. They can also find a wider frequency range compared to that of people. They can find noises in the frequency of roughly 40 to 60,000 hertz, depending upon age and type. Pet dogs also have more muscles, about 18 or more, in their ears, that makes them hear noises better.
Pets are not colorblind, such that they only see black, white, and gray. It is a myth that dogs are colorblind, since they see color, just not as clearly as people do. The color range dogs view is restricted compared to the broader spectrum that people see. Their color fields mainly consist mostly of blues, yellows, and violets. This is because pet dogs have fewer types of cones, have more rods, and no fovea, the part for sharp visual details in human beings.
The fastest dog breeds can add to about 40 miles per hour at full speed. Breeds that run quickly include Greyhound (43mph), Vizsla (40mph), Jack Russell Terrier (38mph), Borzoi (36mph), and Weimaraner (35mph). Shoulder blades of pet dogs are unattached to the rest of the skeleton of their body, and this permits them to be more versatile for running fast.
The only gland pet dogs have actually been around its foot pads. Unlike human beings, who have a lot of glands to help with cooling, dogs only have very few sweat glands. Because of this, they have different methods of cooling themselves. The principal mechanism used by dogs to control their body temperature is panting with their mouth open and breathing heavily, which permits the wetness on their tongue, nasal passages, and lungs to vaporize.
Female pets have a pregnancy duration of about 63 days. They carry their young puppies for about 2 months prior to they are born. This is measured from the ovulation (release of eggs) days to the day the puppies are born. Like humans, dogs likewise have three trimesters, each at approximately 21 days long.
Chow and the Chinese Shar-Pei have black tongues! Unlike almost all pets that have pink tongues, Chow and Shar-Pei have black ones. Nearly all however 2 breeds of dogs have pink tongues: the Chow and the Shar-pei both have black tongues. The origin of this black tongue is still a secret - there is still no confirmed explanation regarding how or why they came to have it. A couple of other animals, such as giraffes and polar bears, also share this quality.
Pet dogs likewise dream! Canines have the very same kind of sluggish wave sleep (SWS) and rapid-eye-movement sleep (Rapid Eye Movement) as human beings. Lots of scientists think that dogs also dream during their REM sleep. Harvard psychologist Dr. Barrett even said that pet dogs frequently dream about their owners, because like individuals canines also "dream about the very same things they are interested in my day."