-sometimes it jerks violently causing him to gasp and sneeze, even in his sleep. when this happens his lip curls or his mouth opens slightly then after, he moves his mouth as if he is tasting/swallowing something. i first noticed this last night. he is on prednisone for urinary infection/cystitis since last thursday. i called the vet they say the meds wont cause this symptom...? its freaking me out- what could have brought this on all of the sudden???