* Habitat loss and degradation: This is a major threat to many primate species.
* Hunting and poaching: Some primates are hunted for food or for the illegal pet trade.
* Disease: Primates are susceptible to a number of diseases, including those that can be transmitted from humans.
However, we can say that there are over 500 species of living primates.
Here's a breakdown:
* Monkeys: Around 260 species
* Apes: Around 24 species
* Lemurs: Around 100 species
* Lorises and Galagos: Around 20 species
While this gives a general idea, it's crucial to remember that many primate species are facing extinction.