THOMSON, CARROLL COUNTY, ILLINOIS LAND FOR SALE: 1 - 13 of 13 listings.
Confidence votes 13. The proboscis monkey, is endangered because land shortage due to people building plantations and houses. Before 2006, people were hunting them. and now there is only about 3,000 left in the island Borneo and Sarawak.he proboscis monkey is an endangered species due to habitat loss and hunting. To see a picture of the proboscis monkey, see the related link.
Proboscis Monkeys tend to live for up to 20 years in the wild and are not able to reproduce until they are at least four years old.roboscis Monkeys tend to live for up to 20 years in the wild and are not able to reproduce until they are at least four years old.