Credit: Dr. Heather Berst, Zoetis Whether you’re a nature lover or not, you’ve probably heard the mnemonic “leaves of three, leave them be” to help you identify and avoid poison ivy (Toxicodendron radicans). Unfortunately, dogs can’t rhyme or count, so it can be hard for them to know to stay away from it. Though it’s rare for a dog to get poison ivy, it’s […]