my boxer,great dane mix had his teeth cleaned. they knocked him out to do so,they made sure he was wieghed properly,106. when mi brought him home he was still groggy, he got out of the car and into the yard to do 1 and 2,we went into the house and he demanded a drink of water,which he drank liberally,then he began to cough as if he were going to vomit,he coughed and gagged several times, but never threw up, and his breathing got very ragged, he seemed to be alert, but he had alot of foamy spit around his mouth. he is not normal, he wont get into bed or come to me ,he just is laying by the ac vent thru the night and he is still coughing.he does not want to be touched. his nose is hot and dry, pleasew help.