I'm fostering a pittie for a few days (and am totaly in love, wish I could keep her) and she learned very fast about sniffing cats behinds. Now when they come up and sniff her she holds still, but covers her nose with one paw in case it gets scratched for some reason beyond her comprehension. As far as I can tell the only thing dangerous about this girl is getting in the way of her tail when she's happy.
