there are 3 other Ontario snakes that may sound like a rattlesnake by vibrating their tail along the leaves on the ground.
the eastern fox, black rat and eastern milk. If you live in Ontario and camp, hike or live in rattlesnake populated areas its a good idea to get familiar with what an eastern massasauga rattlesnake looks like and how to deal with one when encountered. Contacting a provincial park can provide you with
this information or you can pm me and I'll send you some info. that I have collected from the Eastern Massasauga Rattlesnake Recovery Team.