I am curious...have you been giving him raw
meat previous to this?? You mention that you
have begun to cook his food?? If you have
been feeding your pet raw meat it could well
have some parasites which do not include the
usual associated with dogs...Humaworm makes
a pet dewormer you may consider...
My vet requests that I add oil to our dogs
food. Also, they do make kibble which is
geared toward animals which have intestinal
upsets. If your dogs is experiencing diarrhea
eating just chicken and rice, why not try
switching the diet to see if it makes a
Dogs drink from puddles and scummy ponds so
I do not think it would be water so much as
the diet itself.