Posts Tagged: hives in dogs May 1, 2026 by Lincoln Hills Veterinary Hospital Swollen Face or Hives in Dogs: Allergic Reaction or Emergency? One minute, your pup looks perfectly normal. The next, you notice puffy eyes, a plump muzzle, or raised bumps beneath the fur. Dog face swelling can appear suddenly and dramatically, and leave pet parents startled and unsure what to do next. The good news is that many allergic reactions in dogs are mild and treatable. […]