Oh my! You're asking the posion ivy expert! Eek! I'm well known in 3 different emergency rooms as having gotten the worst case of posion ivy ever seen in Washington state! Dogs are unaffected by it, but if they get the oil on their fur and it's not washed all the way off, you can get it. Remember to wash their collars and bandanas, too. If you're interested in facts, www.poison-ivy.org is a really good web site. My story is the one entitled "He finally figured out it was poison ivy".