Can anyone help with a male 8 year old cat experiencing urinary problems. Louis eats only dry food despite desperate attempts to wean him onto wet food. Vet suggests this is the way forward, but he won't even try it. No tuna, fish or fresh chicken either! Any advice most welcome as this problem occurring more regularly. His sister won't eat the wet food either, but she is not suffering at all. Any help much appreciated for my little boy!!