Thanks petdr for the reply.
I have found out that its due to anxiety that she is sucking the tail. Like a security blanket I guess.
This winter has been very harsh in our area and walks have not been done because of the extreme cold.
Dals need their excercise..I know that...so we have taken up in door bubble catching and games of "hide the Mommy". I am so hoping for a break in this cold soon!!!!!!!