Hi I have blu who is 11weeks husky cross cross gsd, she is a really good pup and taken well to crate training, some commands and toilet training but a few times a day she looses the plot and goes manic playing which involves her biting me or my partner and we can't calm her down for 10 mins, I always say a firm no and a tap on the nose which does not work she just carrys on biting, she's not doing it in an aggressive way but it bloody hurts any suggestions would be grateful.