Yorkshire terriers are prone to liver shunts, and other lovely things. See this link:Originally Posted by glitch
Anyone know if this dog is prone to any medical diseases??
Okay sorry that was so long
http://www.yorkieviews.com/healthfacts.htm
Shih Tzus are prone to many eye poblems, skin problems and cysts.
http://www.qualitydogs.com/Shih_Tzu/information.html
Hopefully your dog will be healthy, but I would be watchful for these things considering where that pup came from.