Photo Credits
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
black-horse
from Shutterstock.com used under Royalty Free
bull
from Shutterstock.com used under Royalty Free
cow
from Shutterstock.com used under Royalty Free
donkey
from Shutterstock.com used under Royalty Free