80% of dogs over 3 years of age have peridonal disease. It’s not just the teeth it affect, but other internal organs! Dental care for pets is VERY VERY important!
Raw meaty bones are nature’s toothbrush. (Always raw, never cooked bones. Cooked bones are dangerous; they are brittle and splinter into shards. Raw bones are soft and digestible.)
Which bones to give depends on the size of your dog. My 6-12 pound dogs get duck necks, chicken legs, pork necks, etc. Bigger dogs can obviously handle bigger bones.
Good book: http://www.amazon.com/Raw-Meaty-Bones-Promote-Health/dp/0646396242/ref=pd_sim_b_2
Here are my dogs’ teeth after switching to a raw diet: http://www.youtube.com/watch?v=TaccYHXL6ek
(Even if you don’t feed raw, giving them bones a few times a week still helps the teeth a lot!)
I cannot recommend any Science Diet product. The ingredients are HORRIBLE. It’s cruddy, overpriced food. I wouldn’t even feed it if I got a free lifetime supply.
Chicken by-product meal, corn meal, brewers rice, powdered cellulose, soybean mill run, animal fat (preserved with BHA, propyl gallate, and citric acid), dried egg product, vegetable oil, natural flavor, flaxseed, taurine, preserved with BHT and BHA, beta carotene, minerals [potassium chloride, salt, ferrous sulfate, zinc oxide, copper sulfate, manganous oxide, calcium iodate, sodium selenite], vitamins [choline chloride, vitamin A supplement, vitamin D3 supplement, vitamin E supplement, ascorbic acid (a source of vitamin C), niacin, thiamine, calcium pantothenate, pyridoxine hydrochloride, riboflavin, folic acid, biotin, vitamin B12 supplement].
Mystery chicken parts, corn, soy, mystery animal fat, carcinogenic preservatives… bad bad bad stuff!
Dog food reviews: http://www.dogfoodanalysis.com/dog_food_reviews/