Can dogs (ES) be allergic to poison ivy? I am fighting a hot spot battle like I have never seen on just one of my dogs. We have even been to see the vet, but it appears we are going to have to go back. I do have some ivy in my back yard. That made me wonder.
No. Poison ivy (oak, sumac) doesn't bother dogs. But dogs can be a vector by getting the sap on their hair coat, and then transferring it to people when we pet or handle them.
This time of year--and with this wet spring--there are plenty of allergens out there that can be responsible for your dog's hot spots. First and foremost, make sure you have no fleas whatsoever.