A major component of social chemosignaling in macrosmatic
mammals is conveying of social status, namely dominance/submissiveness.
The differences between the human and canine nasal passages that make dogs more macrosmatic
(keen-scented) lie not only in the amount of nerve receptors and cilia in its tissue (or epithelium) used to pick up scents, but also in the way the two sections are separated in dogs and other keen-scented animals.
In dogs, cats, horses, and other macrosmatic
mammals, smell is of much greater importance.
Many four-legged animals including dogs have a keen sense of smell and are macrosmatic
, which means they have a greater level of olfactory function with a complex nose design, as well as a large olfactory lobe in the brain.