Twins are pretty rare, accounting for just 3% of births in the U.S. these days. But new research shows that for primates 60 ...

The total number of nonhuman primates in research in the United States was 71,921 in 2021 (the most recent year for which figures are available), according to the US Department of Agriculture. This ...

According to the International Union for the Conservation of Nature, the Sumatran orangutan is on the critically endangered ...

For many of us, it may be hard to imagine that if we went back far enough in time—more than 55 million years, when the first primates are thought to have lived—that our great-a-million-times ...

Marmosets can communicate with one another by name and know when they are being addressed, joining a very short list of ...

The tree, the most complete of its kind, shows the evolutionary timescale of the whole order of primates, including monkeys, apes, lemurs, lorises, and galagos. In the following guest editorial ...

According to the International Union for the Conservation of Nature, the Sumatran orangutan is on the critically endangered list ... have more than 1,000 primates, and some are in captivity.