During mating, the pair is locked into a copulatory tie, which may last 5-36 minutes.

In males, the third pair of legs are modified to form copulatory organs.

She was evidently interested in yet another copulatory encounter.

Copulation is relatively short, and takes place during a brief copulatory jump.

Wolves are able to separate from a copulatory tie more readily than domestic dogs.

These seals, or copulatory caps, last for a week.

Bilateral lesions have been shown to reduce copulatory behavior in male rats.

After mating, a copulatory plug forms, which is expelled about 48 hours later.

No, he looked as if he had wanted to add a copulatory adjective in front of "plants."

He began his work on the effects of copulatory behavior on reproductive physiology.

Soft body: the right tentacle is generally modified into a copulatory organ.

Female courtship calls also motivate copulatory actions and competitive behaviors.

Species use strictly defined microhabitats and have very complex copulatory organs.

This action allows for initial and subsequent copulatory bouts .

It is hypothesized that the cloaca turns itself inside out to serve as a copulatory organ.

The male copulatory organ of various lower invertebrate animals is often called the cirrus.

In species where copulatory plugs are present there is a smaller degree of sexual dimorphism.

These include the characteristic ovipositor of many female insects and the diverse male copulatory organs.

The male coelacanth does not have distinct copulatory organs, just a cloaca.

The structure of the copulatory apparatus varies significantly between males of different species.

Males have a small copulatory bursa at the posterior.

Take red deer: a few males control most of the females, leaving the other males out in the copulatory cold.

Almost every time these female cowbirds heard a song that stimulates them, they assumed a copulatory posture.