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Sexually-related scent glands prominent in ungulates and lagomorphs.  They are located at the base of the udders to allow offspring to locate the teats of their mother.
 
Sexually-related scent glands prominent in ungulates and lagomorphs.  They are located at the base of the udders to allow offspring to locate the teats of their mother.
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*[[Anus - Anatomy & Physiology#Carnivores|'''Anal sacs''']]
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*[[Anus - Anatomy & Physiology#Species Differences|'''Anal sacs''']]
 
Sebaceous (and modified apocrine in the dog) glands lie within the wall of the anal sacs, with a duct carrying material to the anal opening.  The foul smelling secretion may act as a territorial marker.  Secretions are expressed on defecation.  The secretions are composed of fatty and serous materials with cellular debris.
 
Sebaceous (and modified apocrine in the dog) glands lie within the wall of the anal sacs, with a duct carrying material to the anal opening.  The foul smelling secretion may act as a territorial marker.  Secretions are expressed on defecation.  The secretions are composed of fatty and serous materials with cellular debris.
  
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