Answerbankin, "control" doesn't only mean training - it also means being responsible and preventing your animals being a nuisance to other people! 'Clearing up' after them is one way in which responsibility is demonstrated - as you say, cat owners don't bother. As for the biting - both dogs and cats would rather run away and avoid confrontation, but dogs are prevented from doing so (often by 'leash laws'). Some (of course not all) children get bitten because they haven't been taught correct behaviour around animals, and ignore the previous milder warnings (ear-flattening, pupil dilation, body stiffening, growling etc) to stop their upsetting behaviour. The way to cure this is to teach children proper behaviour just as much as the animals. I bet David wishes he never started this!