(Adj.) Full of people, animals, etc. that are all moving around. They were in a huge shed and the whole place was teeming with chickens!
(Adj.) Willing to do anything to change a very bad situation, and not caring about danger. Mrs. Fox knew that he was trying desperately to find a way out.
(V.) To move around an area slowly and quietly, especially in search of something. "You'll never come prowling on my farm again!"