Hi,
First thing...no bacon grease. Recently a friend had her pup diagnosed with Pancreatitis ( ?) after putting bacon grease on her food, and it was a very small amount.
I am not a vet, but I would have his thyroid checked. Riley had the same issue with the fur / dry skin. He also had some digestive issues and it was thyroid.. Easy to diagnose and easy to treat. Mention it to your vet.
Hope this helps, and let us know how your baby is doing
