I found that "ow" worked best... when used in combination with timeout. when I'd said ow and Dixie didn't back off she got ignored if that didn't work she'd be put in a cage or put outside the room for a few minutes. after a while all I had to say was ow and she'd cease and desist.
Time out is a great way to deal with many annoying interpersonal yorkie habits. eg over excited barking, biting, growling. |