I had a 21 month old dck bite my 3 year old son hard enough to break the skin through his shirt right before his mom arrived to pick him up, so she came to find him sitting in a time-out. I explained and she fully supported the discipline and I think she felt bad about what had happened. I think parents have to understand that this is part of our jobs and part of our days do consist of dealing with discipline issues and crying kids. If they don't get that, that is their own problem. It would be different if the child were crying every day when she got picked up.