Join Date: Aug 2012
Location: Cape Cod, MA
Submit Photo: 9
Photo Submissions 19 Times in 19 Posts
Mine have done that if there is a piece of kibble caught in their beard or between their teeth and their cheek and they can't get it. Tyler did it, big time, when he hit his mouth coming up the stairs and knocked out three of his front top teeth and had a bloody mouth. So I guess it could be food, stress and/or pain. I know that doesn't help much, but it's all I've got.
Mary (miss you, Bailey-1996-2011 and Tyler-1997-2015)