Photo Credits
boy
from Shutterstock.com used under Royalty Free
boys
by footageclips / from Shutterstock.com used under Editorial
bulls-fighting-outdoors
from Shutterstock.com used under Royalty Free
big-donkey
from Shutterstock.com used under Royalty Free
big-goat
from Shutterstock.com used under Royalty Free
horse
from Shutterstock.com used under Royalty Free
lamb
by David Padfield from © 2015 David Padfield, the LUMO Project or WikiMedia Commons used under Creative Commons BY-NC 4.
little-donkey
from Shutterstock.com used under Royalty Free
little-goat
from Shutterstock.com used under Royalty Free
little-horse
from Shutterstock.com used under Royalty Free
sheep
from Shutterstock.com used under Royalty Free
sheep
from Pixabay used under Public_Domain