Dog GPS's

Here's list of devices and sites you can check out:

A. Garmin’s Astro Dog Tracking System
Tracks up to 10 dogs.
Every 5 sec. location updates.
Collar charge good for 17 hrs.
Handheld used for hiking, boating, etc.
Allows preprogrammed topo or road maps.
Garmin.com

B. Globalpetfinder
Less than 5 oz.
Rechargeable
Warns when batteries are low.
Alerts when temperatures are dangerously hot or cold.
Boundaries easy to enter and reset.
Minimum radius 100 ft. (no maximum).
Globalpetfinder.com

D. Pocketfinder PetFinder(Location Based Technologies)
Small, compact, Oreo-size.
Can be set to alert on the speed your pet is moving.
Locates to within 30 ft.
Safety or danger zones alerts when dog leaves one or enters the other.
Pocketfinder.com

RoamEO GPS Pet Location System
Handheld receiver has color 3.5-in. display.
Updates every 3 sec.
Displays distance and velocity dog travels.
Locates to within 10 ft. at select locations.
Collar charge good for 10 hrs.
Roameoforpets.com

C. Zoombak Advanced GPS Dog Locator
2.5 oz., water-resistant; 3 in. by 2 in.
24/7 live customer service.
Up to 10 safety zones with different dimensions.
Recharge at home or in your car.
Unlimited on-demand location requests.
Active for 5 days without recharging
Zoombak.com