Southern Ontario
Southern Ontario has a very different climate from the rest of the country. It is the only area of Canada that has Carolinian forest. Many trees, plants, and wildlife in Southern Ontario are not found anywhere else in Canada. Some rare trees to Canada in this region include the tulip tree, pawpaw fruit tree and the cucumber tree. The Carolinian forests of Southern Ontario have in large part been destroyed by development sprawl. Very few original growth areas remain.
Boreal woodland caribou
Since the 1940s the decline of "Rangifer tarandus caribou" range occupancy in Ontario has been recognized. There are two populations of woodland caribou, the forest-tundra ecotype and the sedentary forest-dwelling ecotype. The boreal woodland caribou population (forest-dwelling), estimated at approximately 3,000, make up approximately one-quarter of Ontario’s woodland caribou, was designated as threatened in 2000 (and likely to become endangered if limiting factors are not reversed) by the Federal Committee on the Status of Endangered Wildlife in Canada and by the Province of Ontario. The migratory forest-tundra woodland caribou, numbering about 20,000 in 2007 is found in northern Ontario, on the coastal plains south of Hudson Bay was not considered to be endangered.