I went to check the oil on my JD 6620 this fall. You know how the engine hood doubles folds. I was watching the hood so I did not catch anything while opening it. Then I leaned in to pull the dip stick and was face to face with a big She coon. She was not happy with me either. LOL.
I know I just about had to have an underwear changing after that. The coon ran down and out the back.
Years ago I had trouble one summer while cutting wheat. Every time you would stop to check the chaffer/sieve setting you would get swarmed with those little black Bumble bees. They had built a nest inside of the rear axle. It took me two nights of spraying with gas to finally get them all. Those little Black Bees are mean little buggers.