Really good point about the pennies. I am a veterinarian and have seen that happen. Iron in multiple vitamins can be toxic if overdosed. I have had cases of iron poisoning from dogs chewing open the kid's chewable vitamin bottle and eating a bunch of vitamins. Also, Tylenol should only be used for a short period of time, not for long term control of arthritic pain (for example). Ibuprofen is bad news. It goes without saying that human prescription medications can be deadly for pets. Don't forget about antifreeze and windshield cleaner fluid. I know they are not food, but they are very sweet tasting, so animals will drink them. Make sure your radiator doesn't leak and that you rinse areas thoroughly where these fluids may be spilled. Good thread.