I have a 3.5 month old gsd & a 10 month 4.5 pound yorkie....Max adores Lexie and Lexie loves Max, but I don't ever leave Lexie's site she is always with me or close for me to get. Max would not hurt on purpose(bite) but Lexie loves to chase Max and that gets him going so he starts to chase back and being a puppy he doesn't realize Lexie could get hurt (she doesn't either/she thinks she is the big dog) Max is also very protective of Lexie and Peanut, he loves them dearly but till he learns how big he really is and gets out of the awkward puppy phase Mom has to be right there...
Here they are giving kisses....