Before I levelled way up, I only had a limited number of eggs or corn in my pack, so when I went to feed a pig or a batterfly it was easy to feed them only 3 items, as "3" was one of my choices. Now that I have hundreds of eggs and cherries in my pack, my choices are to feed either 1 or 10 of food items to these creatures. 1 is too few to induce a bowel movement from these creatures, but 10 food items seems like a waste when it only takes 3 or 5 to get the desired results...
It would be nice to have a little more control over how many of an item to feed to creatures when you've got a large number of food items in your pack!