| unusual behavior
My 3 year old lab/blue tick/border collie mix is usually bouncing off the walls to play fetch when my husband and I get home from work. For the past two nights when I get in the door she has coward and acted very sad, not at all like her usual self. At first I thought maybe she had done something wrong but nothing was disrupted in the house, she didn't go in the garbage or anything. She actually put her tail between her legs and laid down, her back legs shaking, then continued on to lay in her cage. After about a half hour she seems relatively like her old self. Last week we noticed some "leakage" on our bed comforter that did not go through to the matress. Did not have an odor. Could this be related and what could be wrong with her? | 
