Scent glands are exocrine glands found in most mammals. They produce semi-viscous secretions which contain pheromones and other semiochemical compounds. These odor-messengers indicate information such as status, territory marking, mood, and sexual power. The odor may be subliminal-not consciously detectable. Though it is not their primary function, the salivary glands may also function as scent glands in some animals. [ http://en.wikipedia.org/wiki/Scent_gland ]