Garmin recently announced a GPS unit that was developed specially for owners who wants to keep track of their dog while on outdoor activities including Hiking, Hunting or whatever you do with your pet outdoors. The Astro 320 Dog Tracker was developed to deliver a more accurate location of your pet, this new tracker has 30% more range and also has the ability to track your dog for up to nine miles on a flat terrain. It ships with up to ten separate GPS collars than give the owner the option to track up to 10 canines at the same time on the device’s colored display. It comes with pre-installed maps and works very well with Garmin BirdsEye satellite images if you are willing to pay the $29.99 annual fee that comes with that service. There is an integrated microSD card slot that enables the user to store other maps plus an extra 1.7GB of storage onboard in-case the microSD space gets filled. The Astro 320 Dog Tracker is presently available and goes for a price ranging from $499.99 – $649.99.