My Westie puppy is a few days shy of 16 weeks. She's been such a pleasure and is very bright. I've read a few books, lots of articles and eat up all the great advice the many knowledgeable people on this board give, but I have one problem with her I can't seem to solve. She's very mouthy. Typical, I know. I've got the nipping of the hands pretty well under control, but twice a day I take her on a 20 minute walk and always a little ways into the walk she goes bonkers and starts a game of attacking my pant legs. She's ripped holes in at least four good pair of pants. I started carrying a water pistol with me. This worked pretty well initially, but then she decided the water pistol was all part of the fun and it doesn't deter her at all any more. I would know what to do at home (give her a time-out), but when we're out on a walk and I have no props around I'm at her mercy. Firm NO's! have no effect - she's crazed at these times. I've been thinking about buying one of those training collars that spritz a little shot of gas in their face when they misbehave. Any thoughts?