Cherry eye in dogs can be a concerning condition as it can look very angry and uncomfortable. Many animals have three sets of eyelids (so do humans, but ours are much smaller) and the tear gland in that third eyelid can become blocked in dogs (and rarely in cats).
This gland will then swell and pop out in front of their eyeball, leading to a red, cherry-like swelling that looks like an abscess. Dogs with looser skin around their eyes or shallower eye sockets seem to be more prone, and it tends to occur more often in dogs in their first year. If you're wondering, 'Why are my dog's eyes red?' this could be the answer.
