Our doe has has runny eyes all summer. We just keep them cleaned out with vetercyin spray. No pink eye: eyes clear/no cloudiness. When we brought her back from the fair at the end of July she started with a runny nose that is clear off and on. She is eating, drinking and pooping normal. Could this be allergies? I want to try Benadryl how much can I give her? She weighs close to 65 pounds.