(No need for citation because this is my dog!)
As we all know, dogs love to sniff things. It’s one of their main senses and it how they discover the world. According to Dr. Horowitz, the canine’s nose has about 300 million olfactory receptors, while human only have 6 million. This is why our dogs are so fascinated when we take them on walks. They feel the need to sniff everything because the smells are overwhelming them and it makes them want to explore.
Dr. Horowitz also says that licking is related to smell as well, dogs have another smelling system called the vomeronasal organ. It is located above the roof of the mouth and right where the nose slits into two nostrils. This is really interesting to me because people think of dogs as really simple creatures typically, but their bodies are equipped with two different ways to smell, while human are only restricted to a inferior one.The vomeronasal organ gives dogs a sense of smell of objects it can’t see. An example of this is human emotions or even being able to detect if their owner has cancer before the owner even know! I thought this was weird how a dog can smell human emotions. I always thought it was through facial expressions, like how humans know someone is sad or happy.