I don't often come across these mammals, and when I do, they move so fast it is difficult to photograph them! Three weasel species are found in Ontario: Short-tailed Weasel, Long-tailed Weasel and Least Weasel. The Short-tailed Weasel is the most common one, and may in fact be the most abundant land carnivore. However, its nocturnal habits and preference for areas with lots of heavy cover make it very difficult to find. Other members of the weasel family include mink, fisher, marten and otter; all have long, sinuous, agile bodies, and all prey on a variety of birds, small mammals, reptiles, amphibians, fish and invertebrates.