Gold level 16 HELP please

I see it posted here to use the "feed" but the only feed I am seeing is for the chickens....is this the one to use? I need to feed the pig to grow the horns.

No replies yet and I wonder if maybe someone could be more clearer about how they got gold on this level? It is driving me nuts!

What that person who posted and said to "feed" the pigs should have said was you give the pig grass and try to do it without refilling the pump so you don't waste that money filling it. Catch those grey wolves as soon as you can. Good luck

Pigs ??? There is no pigs.