necking

animal behavior

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July 21, 2026

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In animal behavior, "necking" refers to a specific type of contest between male giraffes. These contests involve the males using their long necks as weapons to establish dominance and determine mating rights. This behavior is thought to be a significant factor in the evolutionary development of the giraffe's exceptionally long neck, possibly more so than the advantage of reaching high foliage.1

While the term "necking" can also refer to amorous kissing and caressing in humans, in the context of animal behavior, it specifically describes these dominance-related physical interactions among male giraffes. This is distinct from a "dominance hierarchy" or "pecking order," which describe broader social structures in animal groups where individuals are ranked, and conflict is usually minimized.234

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Why Do Giraffes Have Long Necks?
…social behavior, particularly in “necking” contests between males, which establish dominance and mating rights. In fact, some scientists have proposed that giraffes’ long necks arose because of sexual selection relating to these competitions and not because of advantages they may confer in food competition with fellow herbivores.
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…social behavior, particularly in “necking” contests between males, which establish dominance and mating rights. In fact, some scientists have proposed that giraffes’ long necks arose because of sexual selection relating to these competitions and not because of advantages they may confer in food competition with fellow herbivores.
Read More