The abdominal flaps of the male Australian peacock spider have been described as looking like an Indian blanket or a priceless jewel. Males lift them up when trying -- and often succeeding -- in impressing females.
Portions of the chests of both male and female gelada baboons are colored bright pink. Males, in particular, scan over a female's chest and genital areas before making their moves.
A male peacock spends much of his time and energy primping and maintaining his ornate fanned tail. The effort pays off, however, when he flashes his handiwork in front of admiring females.
Males of the pterosaur Darwinopterus showed off their large head crests that likely resembled the fanned tails of today's male peacocks.
Women worry about having large derrieres, but that is hardly a concern for female baboons. According to a Science study authored by Laurence Gesquiere of Princeton University and colleagues, the genitals of a female baboon swell when she is ready to mate. The male courting her keeps his eyes on the prize, and fights off any intruders that might try to "butt" in.
The bright purple "crewcut"-topped head of the male bowerbird would appear to be enough to attract females. But these dramatic birds put even more flash into their mating displays with elaborate bower displays and eye-catching gifts.
The large elephant trunk-like proboscis -- basically a big nose -- is the male elephant seal's secret to sexual success. He uses it to produce exceedingly loud roars during the mating season while fighting for his favorite gal and getting her attention.
Naturally dressed as though prepared for a Las Vegas floor show, male birds-of-paradise still must perform for their intendeds. Courting males generally engage in dance-like performances on perches or forest floor clearings, hoping an audience of one adoring female.
Comb jellies are translucent and give off a bioluminescent (meaning chemical reaction-caused) glow in the deep sea. Almost all species are hermaphrodites, functioning as both male and female at the same time. Self-fertilization has been documented, so this literal flasher doesn't have to spend much time impressing others.
Lacking elaborate natural adornments, such as colorful feathers, humans often enhance their sex appeal with sexy clothing, jewelry, scents, flashy cars and more. Here, Justin Timberlake and dancers proudly show off their grooves and haberdashery.