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New Facial Glands in Domestic Pig and Warthog

Richard D. Estes, David H. M. Cumming, Gail W. Hearn
DOI: http://dx.doi.org/10.2307/1380267 618-624 First published online: 23 November 1982

Abstract

Sebaceous scent glands, located in the upper lip beside the tusks, are reported in two species of suids. A preorbital gland similar to the tusk gland is also described in the warthog. Tusk-gland secretion is employed for scent-marking objects and could contribute to salivary pheromones emitted during sexual and agonistic encounters when boars champ and gnash their tusks.

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