The red flesh growing in the puppy's eye is actually its eyelid, also called third eyelid hyperplasia. It usually occurs symmetrically, but sometimes only one side of the eye can be seen with red flesh, but as long as it is unfolded If you look at the eyelid on the other side, you will find that it is also present on the other side, but it is not obvious.
If this happens, it is recommended that the pet owner take the puppy to the pet hospital for examination and treatment in time, and pay attention to the puppy Keep your dog's eyes clean and moist.