The copulatory behavior of the golden hamster.

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Abstract
[male] and [female] hamsters are more interested in each other than in the strange test area in which they are placed. The testes descend immediately after the [male] meets the [female] . If the [female] is receptive she requires but little stimulation before assuming the copulatory attitude, which under typical circumstances may be maintained for minutes at a time. "Copulations may continue for more than half an hour, during most of which the [female] remains rigidly in the copulatory position." On the part of the [male] the copulatory act comprises two phases; (1) several rapid piston-like thrusts terminating in "successful" copulations, in (2) a spasmodic thrust during which "the pelvic region is held rigidly forward against the [female] for a few seconds, while the clasping forearms tighten deeply into the female''s flank." Several "successful" copulations in succession precede emission. Between successive acts of copulation the [male] attends to his genitals, while the [female] maintains the copulatory posture.

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