Insectivores    These tiny mammals have poor eyesight. They use ultrasonic waves and their long pointed snout to communicate and find prey. Mammals of the Canadian Wild, p. 314. Common Shrew Mammals of the Canadian Wild, p. 310. Dusky Shrew - Mammals of the Canadian Wild,  p. 309.  Water Shrew The Water Shrew is the largest of all shrews but it would still take 30 of them to weigh a pound. Mammals of the Canadian Wild, p. 316. Pygmy Shrew - Alberta: A natural history,  p. 196. Mountain Water Shrew To top of page. Return