My dog was breathing really hard when I got home, expresses pain towards her rear end, won’t let me touch her tail, is gassy, threw up earlier and it had a quarter of an unchewed rawhide bone in it, now she’s very lethargic, walking around in pain, her breathing is shallow and is having spasms on her bed, she’s an otherwise healthy 3 and a half year old catahoula American bulldog mix…..