That can be tricky as children who are aggressive with each other may be aggressive with thier Pets.
Watch a group of school kids and you will always see one who seems to like to play rougher than the others
You have to keep an eye on them to make sure no one gets hurt.
If I was rough with My Cats My Dear Mother would clip me behind the ear!!!
I cerainly learned fast not to touch the Cat!!!

Mothers know best!!!