Our household is Himself, me, six cats, and two dogs.
We spend about $100-$150 a month on people and animal food, toiletries, cleaning agents, etc.
I cook mostly from scratch, which is a lot cheaper than convenience foods. My dad is retired and spends a lot of time on the lakefront with a rod and reel in his hand, and since my mom won't eat fish, a lot of what he catches goes into my freezer.
I also have a friend who hunts, and when he has a good season, venison roasts, steaks, and sausage find their way to my house. Since we only eat meat about three times a week, even if we have to buy meat, a little lasts a long way.