Amazon.com : PetSafe Guardian GPS Add-A-Dog Collar - Add-On Dog Collar for Guardian GPS Connected Customizable Fence Using the World's Most Reliable GPS Fence Technology, Long Battery Life, Fits Dogs Over 10lb :
WATERPROOF DOG COLLARS - Guardian Gear Bluebird Fits 11" to 14" - CLOSEOUT ! - Walmart.com
Dog Angel Dog Collar Pendant Pet Guardian Angel Glow Tag Glow Pendant Angel Glow Pet Lover Pendant Paw Print Pendant - Etsy
Amazon.com : Guardian Gear Nylon Martingale Dog Collar, Fits Necks 10" to 16", Red : Pet Choke Collars : Pet Supplies