My 5 month boxer Layla began limping and having pain after a game of tug with our 6 pound chihuahua. I took her to the emergency vet at midnight where she was very distressed when they examined her. The vet said she is a drama queen. They gave her a pain shot and more pain pills for today. She cries when getting up and is staying in one spot. Is this typical of a sprained or pulled muscle?