We saw this one in the dune habitat at Rondeau. It didn't seem concerned about us.
They are not agricultural pests, and they are important ecologically because owls, weasels, snakes, and many other predators eat them. Individuals may live several years in captivity, but an almost complete turnover occurs annually in wild populations. In some places they carry the tick that transmits Lyme disease.
source - Smithsonian National Museum of Natural History.