Domesticated dogs are largely carnivores that eat some omnivourous foods. Wild dogs eat a variety of food which consists mainly of prey animals. Prey animals are composed of raw meat, raw bones, organs, other tissue and digested vegetable matter. While dogs are carnivores they do consume a small amount of the vegetable matter contained in the stomach and intestines of their prey. Dogs have evolved over thousands of years to eat this type of diet.

Basic dog feeding guide:

• Provide some variety
• Feed high quality premium commercial food
• Offer some natural foods
• Natural foods include fresh raw meat (e.g. raw lamb), raw meaty bones and vegetables
• Human-grade raw meat and raw meaty bones are preferable as pet meat/pet mince/pet rolls/pet meat and bone products can contain high amounts of preservatives that can be detrimental to the dog's health (e.g. sulphite preservative induced thiamine deficiency which can be fatal) 
• Raw meaty bones such as raw lamb ribs (not lamb chops though), raw lamb flaps, raw lamb tail bones, and raw chicken wings provide several important health benefits including keeping teeth and gums healthy
• Too many raw bones may lead to constipation. Generally 1-2 raw bones may be offered per week with a few days in between each serving
• The bone must be large enough so that the dog cannot fit the whole bone in its mouth or swallow the bone whole
• Never feed cooked bones as these can splinter and cause internal damage or become an intestinal obstruction
• Always supervise dogs when they are eating raw bones
• Dogs ‘like’ bones very much and sometimes become protective. Do take care and discourage young children and others from approaching dogs that are eating.
• Avoid large marrow bones (these have very thick outer rims), T-bones, 'chop' bones eg lamb cutlets, large knuckle bones and bones sawn lengthwise (as done by some butcher's) as dog's may crack their teeth on these
• Please check with your vet that raw meaty bones are suitable for your particular dog (e.g. some dogs with misshapen jaws or dental disease may find chewing on raw bones difficult)

• Dogs may be offered fish such as tinned sardines in springwater, tinned tuna and tinned salmon as a treat occasionally (care with any fish bones). Please avoid feeding a single type of fish constantly
• Dogs may also be offered a small amount of cooked vegetables e.g. pumpkin, carrots etc
• Cooked meat such as boiled chicken or lamb may also be offered but ensure there are no cooked bones; onions/onion sauces or other toxic substances present (see below)
• A small amount of cooked plain pasta/rice may be offered but again ensure there are no onions/onion sauces or other toxic substances present (see below)
• Provide access to grass (avoid chemically treated grass and toxic plants) - dogs will sometimes eat grass which may provide a source of vegetable matter and micronutrients
• The amount of food required will depend on the dog's size, breed, age and level of exercise, but take care not to overfeed or underfeed. Your vet will be able to weigh your dog, assess your dog's body condition score and provide advice
• Adults dogs should be fed at least twice a day to help avoid bloat which can be fatal. Also, dogs should not be exercised immediately before or after eating, to avoid bloat, particularly deep-chested dogs.  
• Fresh water must be available at all times

• Do not feed the following: onions, garlic, chocolate, coffee or caffeine products, avocado, bread dough, grapes, raisins, sultanas, currants, nuts including macadamia nuts, fruit stones (pits) e.g. mango seeds, apricot stones, avocado stones; fruit seeds, corncobs; green unripe tomatoes, mushrooms; a single type of fish constantly, cooked bones; small pieces of raw bone or fatty trimmings