The purpose of the vocalizations is unknown, though they are theorized to convey danger, sexual readiness, and location, as do other ungulate vocalizations.

The yellow and red colors exhibited in the pigments on the underside of a male's body during breeding season alerts the female of sexual readiness.

They put out a superstimulus cloud of pheromones, human scent-signals of sexual readiness.

Like the libidinous Abercrombie & Fitch billboards, such skivvies supposedly signal sexual readiness and maximum value in a newly global hookup market.

I was in a state of acute sexual readiness.

Initially, male frogs will produce advertisement calls which convey information about species, sexual readiness, and size.

Field studies have shown that when a female cheetah's cubs die, she quickly enters a period of sexual readiness, or heat, and breeds again.

Garner's lips are almost always parted in a way that evokes sexual readiness more than it does crime-fighting mental focus.

The lecherous Cohn once used his intercom to address an embarrassed starlet when he asked her if she was keeping herself in a state of sexual readiness for him.