I would think that it would be a wide spread fact among animal guardians that cats and dogs have a lot cleaner mouths than humans... To answer the question, yes, I would let my cats have a bite or a lick of my meal (as long as it's not harmful to them). I would not let them eat something that I have bitten, since my mouth are more germy. And I don't feel like I'm doing something nasty. I've seen people eat after their children, or let children bite a cookie and put it back with the others, and just smile about it (sadly, some adults do this too). I really hate sharing with people because they consider themselves the "clean" race and can be really inconsiderate about other peoples health. I've seen them pick around shared food with their used utensils, lick their fingers and touch food that other people might eat and, again, let children touch and pick on the food as they please. When I share with my cats, at least I know they're not sick, and a lot of the diseases cats get aren't even transferred to humans. I'm really not trying to pick on anyone in this thread (honestly, I only glanced over most of the comments so it's purely coincidental if something similar was mentioned).