Mating ball

Mating behaviour of snakes, toads, and wasps

Mating balls are a brief gregarious structure resulting from a mating behaviour wherein a large number of individuals cluster together while mating. It has been observed in various kinds of animals including toads, bees and wasps, and snakes such as garter snakes and anacondas. Often the ball consists of a single female and many males; a particularly asymmetrical case is that of the red-sided garter snakes which form each spring some of the most populous mating balls observed, in which as many as a hundred males try to reproduce with a single female.

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