Ever seen what a goat's tongue can do? Those feeders are very cute but I can just see the goat with his tongue down inside the cap licking up the food and leaving slobber on the pipe. EEEEEEUUUUUUWWWWW!
I once saw a clever farmer who put the horses food up very high so the goats couldn't reach it but the horses could. The goats learned to stand on the horses back and eat the food !!!!!!!! Yep, saw it with my own two eyes or I wouldn't have believed it. The horses didn't seem to care. The goats liked being up high so much they stayed on when the horse walked across the yard too. I would have liked to see what happened if they broke into a gallop! No, they were not circus folk.