Try the technique called tethering. Attach a leash to her collar and the other end to your belt when ever she is not in her crate.
Very good post. Included in puppy proofing should be an enclosure where your pup has freedom to move around, but not get into things he shouldn't. A laundry room or kitchen where there is no carpet often serves well. You can get a good wire barrier at Petco and other such places. These also provide a good place to start potty training.
Originally Posted by lem
All these suggested negatives for a 12 week old? Not one that I own.
Teach her this game:
Keep in mind the toy you have needs to have more perceived value than the one she has, in real world application.
If you can't be playing with her have her in her crate nearby.
Keep in mind mental games wear them out faster than walking. The more they have to think during early training the quicker they go to sleep.
I wouldn't be popping the muzzle or getting stern with a 12 week old. There will be a time for that. Right now, life should be GOOD!