Primates belong to a diverse taxonomic order, all united by one sexy pursuit. The large-nosed proboscis monkey, the large-testicled chimpanzee, and all primates in between want to have as much sex as ...

April 10 (UPI) --Primates with showy traits, big teeth or bright red chest markings, tend to have smaller testicles, according to a new study. Male primates are hyper-competitive, and no competition ...

SMALL testes and aspermia are both characteristic features of Klinefelter's syndrome, and histological examination of the testes usually shows a lack of active spermatogenesis. Biopsies on testes ...

A recently published study of over 100 primates, including humans, found that those with “showy” facial hair often had smaller testicles. This doesn’t mean that beards equal smaller balls, but it does ...

A recent evaluation of all fertility data in Africa, including Kenya, showed sperm count to have declined by 72 per cent since 1965. The most affected age group was 30-49, although a significant ...