Thanks again everyone! My pup is getting neutered today, so I plan on talking to the dr when I pick him up. I called and he is doing fine! They had to extract a couple of baby teeth that weren't coming out. So I hate that his mouth will be sore too! I'll probably wet his food and get it a little soggy for him.
I ended up purchasing Nutro Nat choice puppy food instead of the Wellness. Mainly because its much more convenient being in Petsmart than the petstore across town. He gobbled it up! I mixed his normal food with a quarter of Nat choice. I guess I'll do it until the normal food is gone.
FYI, if you are looking for Cod Liver Oil (liquid and capsule form) Central Market has it if you live near one. They sell for about $10 a bottle.