Are there poisonous snakes and spiders in Quebec?

Black Widow Spiders are not native to Canada. There may be some here, being kept as a pet, so to speak. Black Widows are not fond of our cold climate.

Answer:

In Alberta's Dinosaur Park near Drumheller Black Widows are just one of the poisonous critters to watch out for (along with the rattlesnake and scorpions)

Oversall Canada is host to the following black widow spiders: * Latrodectus hesperus, the Western black widow * Latrodectus variolus, the Northern black widow, from the extreme southeastern part of Canada