Hills prescription diet canine wd is designed for dogs that easily gain weight and is also useful as a nutritional aid for dogs with fibre responsive diseases mellitus colitis diarrhoea constipation and struvite urolithiasis as even minor weight problems can have an impact on your dogs health and energy levels it is important to keep on top of their weight by managing their food intake weight problems occur with excessive calories and fats combined with a lack of exercise which can lead