I have been taking Kermit to obedience. He is doing pretty well. My concern is that now the instructor is telling us to teach the "drop it" command (Kermit already does this SOMEwhat). Anyway, she is telling us that if our dog currently does NOT play tugowar, that we are to teach them to play Tugowar so that we can then teach them the drop it command. I always heard that tugowar is not recommended because it can damage the teeth and teach challenging. What do you think?