When I was a kid my brothers and neighbors would catch chipmunks by using miniature rabbit traps. We had to be watching from close by because the little critters would pick the door up and run back out. We has one caught that we kept for awhile in an old big TV box. My one brother told my little brother to reach inside the box to get ahold of it. When he did that the critter bit him on his thumb. My brother was flinging his thumb around and finally it let go and ran away. The other brother said yeah he bit my thumb also. LOL That brother did some stupid stuff to us.