I've done my research and I know that at this age being rough is all part of development. I'm just concerned about the pets. They love him or at least tolerate him but now that he's moving and mobile he likes to grab and pull out hair and whiskers and grabs their ears and studies them. Again I know this is all developmental but I can't help but feel bad for the animals. Does anybody have any advice on how to teach him or redirect him so that as he gets older he can respect and be gentler with them.

I've tried a firm no with no avail and tap on the hand does nothing but reinforce hitting.