And four months old used to sound old to me... but its only 16 weeks old! lol Most puppies don't even go home till 12 weeks.. So that gives you plenty of time to order it online! lol
But like I said... Charlie was weaned onto food that contained the Missing link. So Its NOT going to hurt anyone... Some people just fear giving anything to tiny pups... Its a personal thing...
I gave it! Paris was itty! She loved it!