It can be shocking at first to hear that an over-the-counter allergy medication for humans can also be given to dogs, but this is certainly not to say that every antihistamine is safe for Fido.

Benadryl is a human medication that can be used in dogs to relieve allergy symptoms. But you have to be sure you're giving the right dose for your dog's size. (Photo Credit: E+/Getty Images ...

Over-the- counter medications may help ... Wash the dog; don't let the dog bring the stuff inside. One of the most reliable methods of determining allergic triggers is the skin test.