Heres a bit about what causes dogs to bark and what you can do about it. Particularly Yorkshire terriers can be very expressive small dogs. Your cuddly tiny Yorkie can work himself into a barking madness for no reason in any way. There are many paths to reply to your Yorkies barking.
Check to determine if there's any physical problem that your Yorkie might be having if he continues to bark for over 1 or 2 minutes. Dogs can occasionally provoke one another out of disappointment or boredom or just arent playing sweet to get more attention. Passing more time with your Yorkie can make a change in getting rid of his barking because dogs do become forsaken when you're gone for long periods. This makes them ideal house pets, as they do not have dandruff or shed very like other dog breeds.