Goats are okay, just get the little ones-Nigers or Kinders so that if they do jump up they can't knock anyone down. How 'bout some of those cool mini-cows, like mini-jerseys? They are so cute! I've seen some mini-zebu that are just adorable too....oh, and a guy here has zonkeys (zebra donkey crosses)! There ARE some friendly geese out there. Anything kids can feed is a good pick.