These tiny, tireless marsupials can engage in a single intimate encounter for 14 hours straight. In a bizarre evolutionary twist, the giraffe tongue functions a bit like an ovulation stick, sensitive enough to detect the hormones that can tell a guy if his girl is hot to trot.įor a two- or three-week stretch in early spring, Australian forests reverberate with the sexual shenanigans of the male antechinus. After she gives her suitor careful consideration (giraffes pregnancy can be a 15-month commitment), the female will voluntarily release a squirt of pee for her partner to catch in his mouth and “savor,” researchers David M. This time-saving technique ensures that a male won’t waste energy snooping around a lady who won’t give him the time of day or is unlikely to conceive if they couple up.Ī male will crane his long neck over to the female’s rump, nuzzling his head against her genitals. Unlike (most) humans, giraffes will sip each other’s urine-a surefire way to tell if a female is in heat. Like humans, giraffes undergo cycles of fertility.
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