Make your dog the ultimate party animal and put him to work at your next party. Never lose the bottle opener again with the Bark 4 Beer Dog Collar Bottle Opener. This dog collar is made from high grade woven nylon and features a retractable bottle opener on a 2 foot long cord. Getting your beer opened is as simple as calling over the dog. Never lose the bottle opener again. Your dog may not be able to fetch you a beer but he can certainly help you open one! Costs $14.95.