A first aid kit for a large dog will differ from a cat kit in the sizes of the bandages and other items, but the basic components are the same. Your veterinary healthcare team may have a sample kit to show you, or a kit list they recommend so be sure to check with them first.
Your pharmacy and veterinarian have all of the supplies you will need. Select a storage container that allows you to organize your supplies neatly. A fisherman's tackle box or tool organizer will do. Keep the kit out of reach of children and check it regularly for expired or depleted supplies.