So sad

Alma, my wonderful 12 3/4 year old dog isn't doing very well. She has been going downhill for some time, but now, she can't walk because she has lost the use of her back legs. Mostly she sits on her bed in front of the window and barks at whatever walks by. Guarding has been her job--her choice. For the past few days, she hassn't been too interested in eating either. She is such a good dog, she has a sweet dispostition and has been a great companion. The worst part of all this is that she is so mentally alert and normal. It's her body that is giving out, not her mind.