Mike-

Those chew toys are the ones that my two girls automatically go towards every time we're at Wal-Mart.  The squeeking drives me crazy tho.

>>here's one not mentioned. My dog loves to play with an empty 2 litre soda bottle. It's light, easy to toss around, and makes apparently a rather pleasant noise.<<

to go one better on this, Gatoraid bottles -- less noise, more durrable- same amount of doggie-fascination -- tho, there gets to be a point where the challange is just to chew of the lid as fast as possible and then it's done -

The younger of my two bulldogs latched onto these hard plastic keys when she was a pup and never chewed anything else:

http://www.bio-serv.com/images/catalog/canine/keys.jpg

The older of my two bullies, however, chewed up a couple of pieces of wooden furniture, and would spend a good part of her day chewing a concrete statue and/or the brickwork on the fireplace.  Thankfully, they've both grown out of it.

My Cocker Spaniel, Guinness, is a one dog wrecking crew as well when it comes to toys, but these two, found at Wal-Mart have held up for nearly a year now.

No insult intended, Mike, but my dog Stash would chew your dog up and spit him out in minutes -- blessed are the Lab mixes, right?  Nothing lasts around our house.  It's more a question of shelf life.  Will we get a day out of this toy?  A week?  At least an afternoon of private bedroom time sans dog? 

Toys are great, but Stash's motivation seems to be "how fast can I completely destroy this thing?"