Eating with your animal

I may give my pets a bite of human food to eat now and then, but we don't share from the same fork or plate. When it comes to my bird, I'm more worried about what I might give HIM, rather than what he might give to me, lol. I've seen pictures and videos of people letting their birds eat out of their mouths, and I shudder for the sake of the bird! Human mouths are just as full of bacteria as animal mouths. It's just a different balance of bacteria, and what's harmless for us might be harmful for the animal (and vice versa, of course).