Could that painful mouth sore be a cold sore? In the video above, DNews looks into the differences between canker sores and
Poison Ivy grows freely in Canada -- with the exception of Newfoundland. Because of the presence of urushiol, there are no known predators. Our only defenses have been through the act of prevention. The first is best described by the rhyme, "Leaves of three leave it be," which essentially advises people to simply know the look of the plant and then avoid touching it.