Causes Of Swollen Eye On Dog. Bad teeth are just as painful for your dog as they are for you. Allergic reactions are a common cause of eyelid swelling in our furry friends.
Reactions to things like routine vaccines and insect stings can cause significant facial swelling, sometimes only occurring around the eyes. Epiphora in dogs is characterized by continuous tearing. Viruses like distemper, herpes, hepatitis, and canine influenza also could cause eye infections.
