Madison was acting up this morning nipping wife and 3 year old daughter. We were all telling her to stop and to sit, she would sit but would get right back up and bite. After multiple failed attempts to get her to stop I tapped her in her face and screamed NOO!! Only than she stopped and continued playing with her toy instead. For some background we do two long walks a day with some jogging. This acting up was before her first run, we usually redirect her to a toy she could bite on and give her a firm NO! Wife and myself provide food and my 3 year old provides treats when she deserves it. This is why I don't understand why she does it to them and not me. Is it because I am the only one that walks her? a little help here she is my first dog period all I know about pits is months and months of online reading.