Product Reviews
Almost every dog has a different "play" style. Your dog may get more or less out of products we review here. This is simply a guide to how two dogs (and their owners) reacted to certain toys. We welcome your input as well. If you'd like to share your experiences with any of these products, please send us information about the tester (your dog, we assume), the product and your comments.
Our canine testers:
Eluki
(75 lb. female Shiloh Shepherd)
Matsi (50 lb. male Chinook) 
Both dogs are what I consider moderately aggressive chewers which basically means that they can be pretty tough on their toys.
If any of these products appeal to you for your dog, just hit the "back" button on your browser and click on the different suppliers I have listed. Use their search functions to find what you want.
Kong Products:
Classic Kong (the red one)
Eluki and Matsi both love to unstuff Kongs.
They have distinctly different styles for removing the goodies.
Eluki licks, rolls, and tosses her Kongs to get the stuff out.
Matsi licks, chews and drops his Kong to unstuff it.
When the Kong is empty neither dog is interested in it.
These toys show little wear from the dogs. They do eventually start to become gummy in places, after one or two years of washing them in the dishwasher to clean them.
Dental Stick
We've tried putting peanut butter in the grooves and stuffing both dry treats and PB into the hole. We also put Kong TOTs in the grooves.
One must be creative to figure out how to get the PB into the grooves and not just all over the outside of the toy. Most dry treats pushed too far towards the center of the hole stay stuck there.
Eluki tries licking, rolling and tossing, and gives up if it doesn't work (which it usually doesn't with the dry stuff).
Matsi is more persistent and tries chewing to crunch up the treats inside the hole. He has chewed the ends of the grooves off trying to get the Kong TOTs out of them, but has been successful in cleaning them out.
Both dogs will lick at the PB on the outside of the toy, but don't try very hard to clean it all out.
Biscuit Balls
The large Biscuit Ball seems to be too big to hold anything in it for very long.
The small Biscuit Ball is better at holding in the different "cookies" and biscuits I use. (I use Innova Health Bars, VitaGravy's Biscuits & Gravy Wheat-free, Kong Stuff'n Snaps and Pet Pleasers Bakery Wheat-free crackers for stuffing most larger Kongs)
Both dogs will work on these smaller balls until they are empty.
Goodie Bone
Matsi will chew on this one for quite a while. The payout (pieces of treats falling out) seems to happen just often enough for him.
The toy shows little wear after about a year.
Eluki will try her usual methods, but loses interest quickly as mostly chewing is required to remove the dry treats.
Stuff'n Ball
We actually purchased this one before it was distributed by Kong. It was called Havaball then. I don't think they've made many changes, so the information should be mostly relevant.
Eluki really likes this one as it fits her style best. She almost always eventually empties it.
Matsi will usually manage to knock treats out of it, too, if Eluki will let him.
Nylabone Durables, Dental Dinosaurs, Rings, Big Chews and Galileo
Both dogs like to chew on these toys more than any other durable toy. We go through a lot of them, but they last longer than any other chew-toy.
Crazy Ball
Eluki likes to roll this one around, and it keeps her occupied for a little while. The treats tend to come out too easily if they are small.
Matsi likes it, too, but tries to chew it. Since he can get his teeth into the holes some, I prefer to watch him closely with this one.
Biggest downfall: it's LOUD.
Premier
Busy Buddy Twist n Treat
Another great interactive toy! Neither dog has been able to destroy it and I can change the level of difficulty (of removing treats) with relative ease. Keep in mind, however, that if you choose to put this one in the dishwasher, screwing it together becomes more difficult. The company representative suggested using a little vegetable oil on the screw threads, but that didn't work in this case. Hand-washing works on the new one fine, though.
Chuckle and Waggle
Both of these toys have a patented Treat Meter built in to distribute small treats which you load into the toys. They seem to be designed more for dogs who like to wildly shake their toys. The company representative said that the prongs in the treat meter are supposed to be removed (cut) one at a time until the owner finds what works for his/her dog. Neither of our testers could remove the treats even with all of the prongs removed, nor are they interested in playing with the toys by themselves.
Canine Genius
Leo
Very cool new idea. There are lots of different ways to get treats out of this toy. Your dog will really have to think. You can also buy more than one of them and link them together, allowing dry treats to roll from one Leo to another.
Eluki did very well with this toy when we put loose dry treats in it. Matsi, however, not as adept at shaking things out as Eluki, gave up quickly on shaking and tried to chew his way into them. He was on his way to success when it was taken away from him. He chewed a rather largish chunk off the "chimney" end. The company was wonderful about it though, and are working on a version of the toy for the more aggressive chewer.
Good news. We've heard a rumor that new and improved versions of the Leo are on the way. Stay tuned.
Our Pets
The dogs both love this one and will knock it around until all of the treats are out. The payout is just right for small- and medium-sized treats as they have to roll over a lip around the hole. These two dogs can't seem to remove larger treats. There's no way for them to chew it out. Eluki has had one of these as long as I can remember, and it has no chew marks, tears or holes in it.
Buster Cube
It has been awhile since we used this one, but both dogs are able to and seem to enjoy removing treats from it. I could never get the hang of changing the treat dispenser, but it's supposed to be adjustable so you can make treats come out faster or slower. It's noisy on carpet, and nearly deafening on hard floors, so we tend not to use it anymore. It's a great toy to keep your pet busy when you're not home to worry about the noise ,though.
More reviews soon...