Each receptive female may be followed by several males, who attempt to bite and grip her disc.

The purpose of fighting is to secure mating rights to receptive females nearby during the breeding season.

Was that the signal she gave off, the scent of a receptive female?

She's not doing the sort of things you'd expect from a receptive female.

The female, if receptive, responds to this by a 'head up' display.

When a male finds a receptive female, he will scent mark her and follow her around.

The female, if receptive, will crouch down and point her tail to the male.

These hormones have been shown to make the female more receptive to mating with the male.