American zoologist Laurie Marker has been collecting and storing specimens in a cheetah sperm bank in Namibia for 35 years, ...

Scientists trace the origins of human kissing back over 20 million years to ancient apes who first showed gentle ...

Experts worry cheetahs may one day be on the brink of extinction and need artificial reproduction to save them. View on ...

In the animal kingdom, pregnancy rarely follows the rules, with many species being pregnant for a year or more.

This is a preview. Log in through your library . Journal Information Founded in 1955, Phronesis has become the most authoritative scholarly journal for the study of ancient Greek and Roman thought ...

Animal mothers exhibit remarkable resilience and ingenuity when raising large litters. Species like the tailless tenrec and ...

Many mammals deliver in minutes after long pregnancies. See which species have the quickest births to help newborns thrive.

Oct. 19, 2025 Groundbreaking research shows that as men age, harmful genetic mutations in sperm become more common—not just from random chance, but because some are naturally favored. Advanced ...