Did you know that a good way to judge the potency of a scorpion's venom in not by the size or colour of the scorpion, but by the size of its pincers? A scorpion with large pincers has less potent venom than one with small pincers (as a rule). The scorpion with small pincers must rely more on its venom, therefore the venom is more potent than its large pincered brother. I just learned this on the programme called "Animal Planet".
I don't believe Canada (where I live) has any native scorpions. Well, maybe out in the "hoodoos", but not around my neck of the woods. If I ever came across one, I would still be scared spitless!