Old Macdonald had a farm

Old Macdonald had a farm, eee-yi---eee-yi-oh
And on this farm he had a cow, eee-yi-eee-yi-oh
With a moo moo here and a moo moo there 
Here a mo, there a moo, everywhere a moo moo
Old Macdonald had a farm eee-yi-eee-yi-oh 

 Old Macdonald had a farm, eee-yi-eee-yi-oh
 And on this farm he had a pig, eee-yi-ee-yi-oh
 With an oink,oink here and an oink,oink there 
 Here an oink, there an oink,everywhere an oink,oink 
 Old Macdonald had a farm, eee-yi-eee-yi-oh 

We change the animal and the noise they make