In general, dogs with any of the following conditions should not be bred. You want to make sure that the parents of the puppy you may be considering have been cleared or checked for any of these conditions. The Shar-Pei are 1 of 14 breeds that can have this condition. This is where the eyelid rolls in towards the eye, rubbing against the cornea and irritating this sensitive structure. Watery eyes, infection, even a corneal ulcer, can occur.
Surgical correction is required.
Dogs with this condition should not be bred, as a genetic component is suspected. The thyroid glands secrete a hormone which controls the basic metabolic rate of the entire body. Inadequate hormone levels reset the body to function at a lower metabolic level. In that case, dogs fatten easily on a normal diet, become sluggish, and are easily chilled. Secondary bacterial infection of the skin is common.