What Does it Mean When a Dog Chews Another Dog's Whiskers?

by Christopher F. Lapinel Google
    "You set my vissibrae atingling."

    "You set my vissibrae atingling."

    Comstock/Comstock/Getty Images

    Is Lucy missing some whiskers? Point the finger at Carter. Dogs commonly chew another’s whiskers during grooming sessions. This behavior has little to do with tidiness though. Canadian neuroscientists have suggested that this apparently affectionate “whisker chewing” might be in actuality an act of dominance.


    Whiskers aren’t just cute; they’re extremely acute sense-receptors. The technical term is vissibrae and, acting as multidirectional antennae, they facilitate a dog's ability to comprehend the physical environment and attract potential mates. Vissibrae are so important, says canine expert Dr. Stanley Coren, that each one traces to specific points in the cerebral cortex.

    Why Whiskers?

    When it comes to objects at close range, Dr. Coren explains, dogs don’t see well. Blame it on the placement of their eyes directly over those fuzzy snouts. Yet, this is where whiskers take over. They help dogs differentiate between items they prefer to eat, play with or else avoid. Dogs also use whiskers to navigate rooms without bumping into walls, detect movement, and assess air currents. Whiskers possess another remarkable feature: they aid the dispersal of pheromones, the hormone that attracts members of the opposite sex. Thus, these little appendages are essential for resource gathering and mating.

    The Dalila Effect

    Many other mammals, including mice, also possess vissibrae. Researchers at the University of Lethbridge in Canada, led by Dr. Justyna Sarna, observed groups of mice in a lab and theorized that the larger, more dominant mouse (male and female) usually performs the “whisker chewing” behavior, essentially nullifying would-be rivals. Though painful, servile mice often willingly accept it and even seek it out. The scientists termed this interaction the "Dalila effect," referring to the biblical character that cut Sampson’s locks — the source of his physical prowess.

    Of Mice and Dogs

    If Dr. Sarna’s “whisker chewing” conclusions are analogous to the same behavior in dogs, this would corroborate what many dog owners already suspect. By nibbling away another’s whiskers, one of your dogs is asserting dominance over the other. Not that Carter should be punished, mind you. The need to establish a “pecking order” is instinctive. However, you might want to curb this. Willingly submitted to or not, the loss of such a valuable tool undoubtedly is disorienting and stressful for Lucy, not unlike the time Carter buried your wallet.

    Photo Credits

    • Comstock/Comstock/Getty Images

    About the Author

    Christopher F. Lapinel is an artist and freelance writer with work appearing in several publications. He is also the co-owner of a holistic dog-training service in San Diego. Lapinel holds a master's degree in creative writing from the University of St. Andrews and taught English at LaGuardia Community College.

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