Why dogs have a big nose?

Answer 1

Dogs' noses secrete a small amount of mucus which serves two purposes: to help their sense of smell, and to keep themselves cool. The thin layer of mucus helps with the absorption of scent chemicals from the air. In addition, the nose, along with the mouth and the pads of the feet, is one of the locations where dogs' bodies release heat.

A dry nose CAN mean the dog is sick, but a perfectly healthy dog may have a dry nose, as well.

Answer 2

because they can smell and what not; smell is the most senstive sense that a dog has, and it gives them the most information about their environment (unlike human beings who rely more on vision and hearing).

Answer 3

dogs have big noses so they can smell a bunch of stuff. some dogs even smell their owners or their fellow doggys from about a mile away. *dogs sniff eachothers butts too*

Answer 4

because they don't see well and their main senses are their sense of smell and hearing its sort of like their nose is their eyes it guides them where to go

Answer 5

Through selective breeding - they choose the dogs with the flattest nose to mate and again and again.

Answer 6

Dogs have wet noses for two reasons: to keep themselves cool and to help them smell