I have about a 2 month old bull that has been very sick since I bought him. He acts like he as NO energy and lays down most of the day. Also he is a wee bit skinny, he really dont eat all that much. He coughs quit a bite and it sounds like there is fluid or mucus or something in his throat and/or lungs. Is this pneumonia? If not what else could it be and what medicine is there for it. I have given him 2 doses of penicilin, 2 doses or NuFlor, and 2 doses of benimin I believe it was. This was all over a period of time of course.