Q. My dog has been eating regular, but he keeps loosing weight, His testicle sack and other areas of his body pail as snow.
DAVID ELBEZE, DVM, MRCVS
A. It sounds like he might be suffering from anemia, maybe due to malabsorption.
There might be something in this food that he is allergic to. Try a good quality grain free dry food (e.g. Orijen, Accana, Evolve), transition to the new food gradually over a period of 10 days (every day put a little more from the new food and a little less from the old food). Keep him o the food for 2 months to decide if it helps or not.
I would also advice taking him to the vet to be checked and perform a blood test in order to see if he indeed suffers from anemia, if he does he might need vit b12 injections.