Hi I have an 11 yr. Old spayed femal JRT she has always been in good health until this week. She has had some muscle weakness,mild trembling in her front leg and breathing a bit heavy. Mild loose stools but still eating and drinking. Does anyone know what might cause those symptoms or of a reasonably priced vet that will work with me on cost. Im on disability and have only a small supplemental income on top of my disability. But im extremely concerned about my baby.