Originally posted by Orangutango
Echo has that problem too, it's getting better though. Teaching "drop it" doesn't always work like you are all saying it does. All of my dogs know what "drop it" means and listen to it well, except for Echo. Whjat I did was when she had something that I wanted her to let go of or drop I would go and get something that she'd like even better than what she was holding onto. I would only give it to her when she dropped it and then give her lots of praise. I know that's not much help but that's all I can think of to tell you...
That's how you should teach drop it though. The dog should get a reward for letting go of a prized item and the reward should be something that has more value than what they already have.

That's what I meant by playing the trade game in my other post. Let the dog know you're always willing to trade them for something better....