Lunging at passerby or other dogs in either friendly or aggression is annoying and dangerous. Whenever you see your teacup yorky showing interest in an approaching person, immediately jerk hard on the leash as a warning.

This should stop him fast. You should not allow him to bark and pull uncontrollably. The moment he starts, turning in the opposite direction and snapping hard on the leash is another method of coping with the problem.

In his excitement, he may not be listening to you, so you must use physical means to control him. Flipping the end of the leash sharply across his nose can help; having a second person throw something at him can also work.

If your teacup yorky shows extreme aggressive tendencies, corrections must be done.

While walking on a leash, some dogs grab playfully at their owner’s arms or at the leash itself. If your teacup yorky does this, don’t pull away. That will only encourage him to grip harder and perhaps accidentally tear your clothing.

Hold still and bring the end of the leash down across his nose immediately. If he doesn’t listen, tap him firmly on the side of his muzzle. He must back off. When he lets go, praise him. One or two such lessons should teach him not to play this way.

Simply being restrained by a leash and asked to walk by your side can cause some dogs to get hysterical. They growl and jump around, climbing all over the person holding the leash, even lunging and trying to bite.

Handle the problem immediately and firmly with a tap on the nose, or firm nudge in the behind. Your teacup yorky should allow you to pass through a doorway or other departure without rushing through and knocking you down.

To teach your teacup yorky not to rush ahead, make him sit and wait for a moment after the door is opened. Then quietly pass through, with him by your side.

For a teacup yorky that loves to tear ahead through every opening he sees, an excellent cure is to crack the door ajar just enough to admit his head. Have a second person stand on the other side of the door and throw something in front of your teacup yorky if he goes through first.

He will soon learn to avoid this by letting you go first or by staying right by your side as you go through.