[gemy]

I will be very blunt here and apologize in advance for any hurt feelings. Would either you or your Mom accept this behaviour from a 100+ lb dog? If not why accept it with this Yorkie? It is very serious behaviour issues which I am sure that you know.

There is some sort of behaviourist accreditation a google search will find out same.

In the meantime your Mom should seriously considering tethering to her all the time when her Cujo is out of the playpen or crate. This way her behaviour can be controlled - corrected rewarded etc.

In terms of your comment if a dog continually goes from 0 to bite with no warning this is a high red sign that there maybe something mis-wired with in her brain. How ever I do not know what early and how much early obedience training she received. Doubtfull much as most Yorkie owners don t pay any attention to training.

Your Mom needs to act now before there is someone who reports her dog to the Animal Control in the area.