I am going to weigh in here: Many of you will recall 7 years ago when I got Bogey. After 1 week, I thought I had the spawn of Satan! I had never had a pup that terrorized and puppy nipped as much as he did. The folks here walked me through this VERY.TOUGH. STAGE. I live in Florida and could not wear shorts or short sleeves for months! I was COVERED in shark bites!! The best advice I got was to be PATIENT, LOVING, CONSISTENT! Showing any sign of aggression towards the pup will set you back bigtime!! Positive reinforcement and gentle correctness is a must. With a little tyke in the picture, your job will be a bit more challenging as he will think of the small tot as a litter made. That said, Bogey absolutely challenged the coin shake, LOVED the water spray in the face, licked bitter apple like it was peanut butter, and no amount of "redirecting" made him stop the madness. What I ended up doing, was if he got out of control and had 2 chances at redirecting, I placed him lovingly in the crate and shut the door. 75%of the time, he went to sleep ( thus, sometimes bad behavior is just them being tired and acting out, just like a kid needing a nap). The other 25% he would yelp and cry. I let him. ONLY when he calmed completely down did he get out of jail. There are some that do not believe in crating for bad behavior, but I found this was what worked for Bogey. It will be trial and error. We actually put a large gate around our couch one night so we could have some reprieve from the toe biting. WE were inside the pen, Shark Bogey was circling around the gate like a hungry fish. True story. Bottom line, he did grow out of it, but it took months. DON'T GIVE UP! Bogey is now 7 and the most gentle, loving dog, but is still mouthy at times, but knows how to be gentle. This is a wild ride you are on. PS: We now have an 11 week old and he is mouthy and challenging, but responds easily to redirection. Just luck of the draw! Hang tough mom!!