Scent rubbing

Scent rubbing is a behaviour where a mammal rubs its body against an object in their environment, sometimes in ones covered with strongly odoured substances. It is typically shown in carnivores, although many mammals exhibit this behaviour. Lowering shoulders, collapsing the forelegs, pushing forward and rubbing the chin, temples, neck, or back is how this act is performed. A variety of different odours can elicit this behaviour including faeces, vomit, fresh or decaying meat, insecticide, urine, repellent, ashes, human food and so on.[2][3] Scent rubbing can be produced by an animal smelling novelty odours, which include manufactured smells such as perfume or motor oil and carnivore smells including faeces and food smells.[2]

A bobcat (Lynx rufus) near a scent rubbing post. Bobcats display cheek rubbing to scent mark in the wild.[1]

Scent rubbing is often performed with scent marking and self-anointing, and is typically used by animals to scent mark an object in their surroundings. This marking can be used as a means of communication between species.[4][5] Many different species of felids, monkeys, bears, wolves and marmots have primarily been used to study scent rubbing in carnivores.[6][7][8] Differences in gender and age exist for scent rubbing, with adults and males performing the behaviour more frequently than juveniles and females in many species.[9][10][4][8][6]

Species

Felidae

Many carnivorous felids scent rub. Felids are able to discriminate between similar smelling odours using the vomeronasal organ, which is important for eliciting scent rubbing.[6] The rubbing behaviour is often performed as a means of scent-marking.[11]

The opening of the vomeronasal organ, used by felids and other species to discriminate between different odours during scent rubbing.[6]

Domestic cat

Domestic cats display scent rubbing. The cheeks, abdomen, paws, above tail and around the anus contain organs that produce scent. When a cat is comfortable with their surroundings and environment, they release the feline facial pheromone during facial rubbing in order to leave this pheromone on the objects around them.[6] Cats scent rub against objects as a means of marking by releasing pheromones with glandular secretions, and information about the animals age, sex, and identity can be obtained from these secretions.[5][11]

Domestic cats will more frequently rub against an object that is new to their environment. When an object is induced with the scent of another animal it causes an increase in rubbing as it contains sensory properties that are not familiar to the cat.[12] When a cat is presented with an object treated with scent gland secretions from both a rat and snake, the cat will forcefully scent rub its head against it.[12][13] Mutual face rubbing behaviour between cats in groups and cats rubbing against their owners may be a form of social bonding. During rubbing against humans, cats tend to use the temporal gland area which consists of the cheek, between the eye and the ear.[11]

Leopard

Kalahari leopards use trees in their environment to scent rub. When the backs and flanks are rubbed against trees it is most often related to itching rather than scent rubbing, but when rubbing to scent mark is used it is mostly demonstrated by males when mating. It is suggested that this rubbing behaviour is a form of chemical communication regarding female attention.[14]

Bears

Bears rub against the ground, trees and rocks in order to scent mark. This is the most frequent way that bears mark their surroundings. Black bears rub their cheeks, back, neck and head against trees in a bipedal stance. This act is noted most often during the breeding season for grizzly and black bears as a form of communication. The behavioural aspect of scent rubbing is shown during interspecific interactions between these bears, as black bears are found to decrease their tree rubbing once a grizzly has already done so.[8] The andean bear scent rubs against trees at marking sites by rubbing its neck, shoulders, flanks or back. Sometimes this species marks the tree with its claws or urinates while rubbing. The behaviour in this species is thought to be linked to intraspecific communication.

Old World monkeys

The rubbing behaviours of the Southern brown howler monkeys are linked to scent marking. Throat (facial and neck), anal, dorsal, chest and chin rubbing has been observed in Alouatta and is mostly performed while sitting. Like felids, howler monkeys use their vomeronasal sensory organs to distinguish pheromones. Dominant howlers of both male and female genders scent rub and mark more than subordinate conspecifics. Anogenital rubbing in monkeys is associated with cleaning after defecation and urination and also deposits the animals scent for other species to notice.[15]

Black-handed spider monkeys are another Cercopithecidae species which display fur rubbing against the leaves of Rutaceae plants. The scent rubbing behaviour shown by the white-faced capuchin of this species if often done by many individuals simultaneously, creating an interaction among their population and may function in scent marking and olfactory communication.[7] Woolly monkeys also show scent rubbing in the form of chest rubbing that suggests the behaviour has a reproductive function. The reasoning for chest rubbing in woolly monkeys is similar to the throat rubbing displayed by howler monkeys during mating season. Rubbing behaviour in woolly monkeys has also been linked to dominance and social communication.[16]

Gray wolf

Gray wolves scent rub to a large variety of odours including urine, perfumes, repellant, ashes, human handled objects, food and resting sites. They scent rub intensively to manufactured smells such as motor oil and carnivore scents such as faeces of other animals including black bear and cougars. The reason behind scent rubbing in wolves in unknown, but it is suggested that they use it to remember odours experienced in their environment, whether new or familiar.[2]

Marmot

Marmots slowly rub their faces from mouth to ears on objects repeatedly as a form of scent rubbing called cheek rubbing. This behaviour is common, and the objects are typically stones, rocks and the ground around burrows. They conduct this behaviour to scent mark, and when interrupted fights can occur. Marmots scent rub on new objects within their home environment.[10]

Communication

Scent rubbing can be used as a form of communication between many terrestrial mammals.[5] This method is used to send messages, find mates and to keep away from areas where others have foraged. Odours produced by sweat glands, urine, faeces and vaginal secretions often induce this behaviour, which is prominent in carnivore species.[3][5] Scent rubbing by males in many species is related to intrasexual communication and social interaction, such as the social status the animal holds in that population.[15] Carnivores often scent rub as a mechanism of olfactory communication in which they release chemical odours to increase odds of being detected by conspecifics.[14]

Spider monkeys rub saliva onto their sternal region and then rub this area against a tree, which may serve as a form of olfactory communication as they often use their apocrine glands, located in the sternal area, for this communication.[7] Rubbing behaviour displayed through cheek rubbing can reveal dominance in a population, with subordinate individuals doing this less than dominant ones. Scent rubbing also allows animals to gather scent from their surroundings onto themselves. Gray foxes have been found to cheek rub fresh puma scrapes in order to acquire the scent and mask their own, deterring predation by other animals. This shows that scent rubbing has an interspecific scent marking function.[17]

Odours that induce rubbing

Both strong naturally occurring and artificial substances can cause mammals to scent rub. Strong smelling substances include rotting meat, fresh meat, vomit, faeces, food and the intestinal contents of other animals. Artificial substances that induce this behaviour include engine oil, perfume and insecticide.[3][18] When an animal encounters an object with a novel or familiar smell it can elicit rubbing various body parts against this object.[2][3]

Gender and age differences

Gender

The scent rubbing behaviour has been observed more frequently in males than females for many species. Certain male domestic cats, bears, monkeys and leopards are shown to scent rub more than their female conspecifics.[5][8][15][14] There is an increase of scent rubbing during breeding season for black bears, but this is done predominantly by males.[8] Body rubbing as a means of scent marking is done more often by male pumas.[9] In species of spider monkey, adult males perform fur rubbing more often than females.[7]

Age

Scent rubbing in cats is performed by adult animals more often than juveniles, indicating that the behaviour is used as a means of marking territory or of expressing their status.[5] Adult marmots display a form of scent rubbing called cheek rubbing more than young members of the species.[10] Mature pumas spent a significantly longer time body rubbing than immature pumas, which is related to communication behaviours developing with age, mature females did not visit their community scrapes as often.[9] Only sexually mature woolly monkeys exhibit chest rubbing, which suggests that this scent rubbing behaviour reproductive function.[16]

References
  1. Crowley, Shannon M.; Hodder, Dexter P. (2017-07-27). "An assessment of the efficacy of rub stations for detection and abundance surveys of Canada lynx (Lynx canadensis)" (PDF). Canadian Journal of Zoology. 95 (11): 885–890. doi:10.1139/cjz-2017-0040. hdl:1807/78969. ISSN 0008-4301.
  2. Ryon, Jenny; Fentress, J. C.; Harrington, F. H.; Bragdon, Susan (1986). "Scent rubbing in wolves (Canis lupus): The effect of novelty". Canadian Journal of Zoology. 64 (3): 573–577. doi:10.1139/z86-084.
  3. Gosling, L. Morris; McKay, Helen V. (1990). "Scent-rubbing and status signalling by male mammals". Chemoecology. 1 (3–4): 92–95. doi:10.1007/BF01241649.
  4. Shttp://www.mdpi.com/1424-8220/14/3/4428htm
  5. Feldman, Hilary N. (1994-06-01). "Methods of scent marking in the domestic cat". Canadian Journal of Zoology. 72 (6): 1093–1099. doi:10.1139/z94-147. ISSN 0008-4301.
  6. Griffith, C. A.; Steigerwald, E. S.; Buffington, C. A. (2000-10-15). "Effects of a synthetic facial pheromone on behavior of cats". Journal of the American Veterinary Medical Association. 217 (8): 1154–1156. doi:10.2460/javma.2000.217.1154. ISSN 0003-1488. PMID 11043684.
  7. Campbell, Christina J. (2000-07-01). "Fur rubbing behavior in free‐ranging black‐handed spider monkeys (Ateles geoffroyi) in Panama". American Journal of Primatology. 51 (3): 205–208. doi:10.1002/1098-2345(200007)51:3<205::aid-ajp5>3.0.co;2-l. ISSN 1098-2345.
  8. Taylor, A. Preston; Allen, Max; Gunther, Micaela (2015-05-29). Black bear marking behaviour at rub trees during the breeding season in northern California. 152.
  9. Allen, Maximilian L.; Wittmer, Heiko U.; Wilmers, Christopher C. (2014-01-01). "Puma communication behaviours: understanding functional use and variation among sex and age classes". Behaviour. 151 (6): 819–840. doi:10.1163/1568539x-00003173. ISSN 1568-539X.
  10. Bel, Marie-Claude; Porteret, Christelle; Coulon, Jacques (1995-11-01). "Scent deposition by cheek rubbing in the alpine marmot (Marmota marmota) in the French Alps". Canadian Journal of Zoology. 73 (11): 2065–2071. doi:10.1139/z95-243. ISSN 0008-4301.
  11. Soennichsen, Susan; Chamove, Arnold S. (2002). "Responses of cats to petting by humans". Anthrozoös. 15 (3): 258–265. doi:10.2752/089279302786992577.
  12. Machado, JC; Genaro, G (2014-12-01). "Influence of olfactory enrichment on the exploratory behaviour of captive-housed domestic cats". Australian Veterinary Journal. 92 (12): 492–498. doi:10.1111/avj.12253. ISSN 1751-0813. PMID 25424764.
  13. Wright, Jeannie; Weldon, Paul J. (1990). "Responses by domestic cats (Felis catus) to snake scent gland secretions". Journal of Chemical Ecology. 16 (10): 2947–2953. doi:10.1007/bf00979486. PMID 24263267.
  14. Du p. Bothma, J.; Le Richet, E.A.N. (1995). "Evidence of the use of rubbing, scent-marking andscratching-posts by Kalahari leopards". Journal of Arid Environments. 29 (4): 511–517. Bibcode:1995JArEn..29..511D. doi:10.1016/S0140-1963(95)80023-9.
  15. Hirano, Zelinda Maria Braga; Correa, Isabel Coelho; de Oliveira, Dilmar Alberto Gonçalves (2008-06-01). "Contexts of rubbing behavior in Alouatta guariba clamitans: a scent-marking role?". American Journal of Primatology. 70 (6): 575–583. doi:10.1002/ajp.20531. ISSN 1098-2345. PMID 18322929.
  16. White, Brent C.; Dew, Stephanie E.; Prather, James R.; Stearns, MaryJo; Schneider, Eric; Taylor, Steve (2000-04-01). "Chest-rubbing in captive woolly monkeys (Lagothrix lagotricha)". Primates. 41 (2): 185–188. doi:10.1007/bf02557799. ISSN 0032-8332. PMID 30545169.
  17. Allen, Maximilian L.; Gunther, Micaela S.; Wilmers, Christopher C. (2017-01-01). "The scent of your enemy is my friend? The acquisition of large carnivore scent by a smaller carnivore". Journal of Ethology. 35 (1): 13–19. doi:10.1007/s10164-016-0492-6. ISSN 0289-0771.
  18. Gosling, L. Morris; McKay, Helen V. (1990-12-01). "Scent-rubbing and status signalling by male mammals". Chemoecology. 1 (3–4): 92–95. doi:10.1007/bf01241649. ISSN 0937-7409.
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