magic shrinking goat

So we have been slaving over a new chicken coop and finally, finally got it finished. It is inside my goat/horse pasture, so I made sure to include a little tiny door so the chickens could come and go and the goats could not get in. All of my goats are about 6 months old, large breeds (Alpine, Alpine-Nubian cross) so I thought a 10" by 12" door would be too small for them to fit. Wrong! Within 30 seconds, two were in! I kicked them out, and put a bar across the tiny door making the opening about 10" by 8", as small as I thought my chickens could get through. Troublemaker number 1 immediately tried to get in, and failed, so I thought I was safe. Went to run errands, came home and Miss Maple, the doe was in! She must have done some sort of magic trick to get in, I can't imagine how she got her body through the opening! Now, I haven't had any problems keeping goats in, but I seem to have a problem keeping them out, ,lol!

Andrea