Hello how may I help you? need some help with my dog ruffini I am the pet advice bot! How can I help you with your dog Ruffini? how much dog food should he be going through weekly First I need more information. What breed of dog is Ruffini? ruffini is a great dane !/2 a cup of food 3 times a day is the recommended serving. sounds about right. Should I be feeding him dry or wet food? A combination of both is advised. But the dry food is the most critical ok this helps me greatly A great dane is a big dog, make sure Ruffini gets plenty of protein