When I brought him in for the night, he was coughing and
throwing up watery liquid, but no
dog food or grass. I also noticed when I fed him at 7:00 that he had thrown up twice recently in the utility room where I keep the dog food, and each watery puddle looked under two hours old, meaning he must've vomited twice between 5 and 6 p.m.
He vomited early this morning, around 4 a.m. and this time, it was a brownish color, but still clear.