Pugs as individuals are as different and diverse as people. Common Medical Problems Pugs have large, round, expressive eyes, that don't have the protection of a large nose like other breeds. Their eyes are often scratched as a result. An owner should learn how to recognize when the eye is scratched and have it treated or it could eventually cause the dog to become blind. As their eyes are set shallowly into their heads, sometimes eyes do come out.
Some pugs go through their lives without any eye problems, some have chronic problems.
Again, they do not tolerate heat or heat-stress situations well. The shortened face reduces the cooling ability of the breed, although the overnose wrinkle can hide more space than you might think. Sadly, many pugs have died just from being a few minutes in a locked car. You must always be aware of how heat will affect your pug before you do anything or go anywhere with him. Pugs are not dogs to run or hike with the family in the heat of summer.