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The rhinarium (Neo-Latin, "belonging to the nose"; pl.: rhinaria) [1] is the furless skin surface surrounding the external openings of the nostrils in many mammals.Commonly it is referred to as the tip of the snout, and breeders of cats and dogs sometimes use the term nose leather.
The ethmoidal labyrinth or lateral mass of the ethmoid bone consists of a number of thin-walled cellular cavities, the ethmoid air cells, arranged in three groups, anterior, middle, and posterior, and interposed between two vertical plates of bone; the lateral plate forms part of the orbit, the medial plate forms part of the nasal cavity.
Dogs and other canids also possess a set of nasal turbinates, an elaborate set of bones and associated soft-tissue structures (including arteries and veins) in the nasal cavities. These turbinates allow for heat exchange between small arteries and veins on their maxilloturbinate surfaces (the surfaces of turbinates positioned on maxilla bone ...
[1]: 653–654 It ends distally by opening near the nasal septum [1]: 616, 653–654 anterior to the incisive canals. [1]: 616 The canal may be up to 55 mm in length. [1]: 653–654 The anterior superior alveolar nerve turns inferior-ward in the canal and ramifies to innervate the incisor and canine teeth. [1]: 656
Canine discoid lupus erythematosus showing loss of noseprint, depigmentation, ulceration and tissue destruction - all characteristic of the syndrome. The most common initial symptom is scaling and loss of pigment on the nose. The surface of the nose becomes smooth gray, and ulcerated, instead of the normal black cobblestone texture.
This category contains articles about the physical structure and appearance of the domestic dog. For diseases and disorders of dog anatomy, see Category:Dog health . Pages in category "Dog anatomy"
In most mammals, the philtrum is a narrow groove that may carry dissolved odorants from the rhinarium or nose pad to the vomeronasal organ via ducts inside the mouth. [4] For humans and most primates, the philtrum survives only as a vestigial medial depression between the nose and upper lip. [5]
Canine terminology in this article refers only to dog terminology, specialized terms describing the characteristics of various external parts of the domestic dog, as well as terms for structure, movement, and temperament. This terminology is not typically used for any of the wild species or subspecies of wild wolves, foxes, coyotes, dholes ...