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The exact function of these glands is not known, but they may produce pheromones or chemical signals for communication with other dogs. It is believed that these sweat secretions produce an individual odor signal that is recognizable by other dogs. [3] Dogs also have sweat glands on their noses. These are eccrine glands. When these glands are ...
As dogs grow older, their performance and ability to learn new smells is reduced. Female dogs have a greater sense of smell than males. A variety of diseases can decrease a dog's sense of smell, such as canine distemper and nasal mites. Dogs have an enhanced sense of smell when fed a high-fat, low-protein diet. There are a number of theories ...
Dog appeasing pheromone (DAP), sometimes known as apasine, is a mixture of esters of fatty acids released by the sebaceous glands in the inter-mammary sulcus of lactating female dogs. It is secreted from between three and four days after parturition and two to five days after weaning. [ 1 ]
An air scent is when human odours of sweat, cells, gland secretions, or toiletries circulate freely in the open air. [6] The bacteria attached to fallen skin cells provide dogs with odorous by-products that enhance the individuality of a trail. [ 6 ]
The rice-field rat (Rattus rattoides) displays self-anointing behaviour in response to the anal-gland secretions of the weasel Mustela sibirica; however, they do not respond to the faeces and urine of the red fox (Vulpes vulpes). Juvenile rats born in the laboratory with no experience of weasels also display self-anointing behaviour.
The violet gland or supracaudal gland is a gland located on the upper surface of the tail of certain mammals, including European badgers and canids such as foxes, wolves, [1] and the domestic dog, [2] as well as the domestic cat. [3] Like many other mammalian secretion glands, the violet gland consists of modified sweat glands and sebaceous glands.
Pheromone-containing secretions from the preorbital gland may serve to establish an animal's dominance (especially in preparation for breeding), [4] mark its territory, or simply to produce a pleasurable sensation to the animal. [5] Because of its critical role in scent marking, the preorbital gland is usually considered as a type of scent gland.
There are specific glands in these areas that produce different odors, such as glands at the corner of the mouth, in the ear pinnae, the preputial and vaginal glands, and anal glands. [39] Dogs gain social information by sniffing particular odors secreted from these areas. [39] Dogs can also gain information from anal secretions.