I believe my Bernese Mountain Dog may have been. Bitten by a small snake last night because I killed one in our garage and this morning both testicles were swollen the size of tennis balls. Tracker is 2 1/2 years old and about 125 lbs. I gave him 5 benadryl ...my vet answering service advised 1 mg per pound. Is there anything else I should do. The testicles are still soft to the touch just swollen.