The Yochon may inherit health conditions from both parent breeds. Documented concerns include Legg-Calvé-Perthes disease (hip degeneration seen in small breeds), patellar luxation (slipped kneecap), progressive retinal atrophy (PRA — available DNA test), hypothyroidism, dental disease, and eye problems. Both parent breeds are prone to dental crowding due to small jaw size, making daily tooth brushing essential from puppyhood. Reputable breeders should provide documentation of patellar evaluation, CAER eye certification, and PRA DNA testing for parent dogs. Typical lifespan is 12 to 15 years, sometimes up to 17 years.