Although hunting, trapping, and vigorous predator control methods were used on the Newfoundland wolf, it is believed to have been led to extinction mainly by a sudden food shortage in the early 1900's when the Newfoundland caribou population drastically dropped from as many as 120,000 to as few as 5,000-6,000. The last wild wolf on the island was shot by 1911. However, it wasn't until 1930 that it was officially listed as extinct.