Found my cat playing with what at first glance I thought was a Massasagua Rattlesnake, he was even shaking his tail like a rattlesnake. It was a Milk Snake though. I eventually picked it up and put it back in the ravine to get it away from the cat.
I suspect he may have been hunting some Garter snakes we have been seeing on the property a lot.
I'm in Victoria Village, near the DVP and Lawrence, backing onto the Don.