PLEASE READ!!! This puppies mama is a purebred Yorkie. We did get a dna and he is a Yorkie/Chi mix. This puppy has Megaesophagus. Please do your research on this disease before applying to adopt. It is a simple disease and easy to manage. He just needs to sit in upright in a chair while eating. Other than that, he is one happy, loving, playful puppy. You would never know there is anything wrong with him. He is mellow and absolutely the cutest puppy you will ever meet. Megaesophagus is not a single disease. Instead it is considered a combination disorder in which the esophagus (the tube that carries food and liquid between the mouth and stomach) dilates (gets larger) and loses motility (its ability to move food into the stomach).