You can get your best friend a micro-chip that will help identify him if lost, but other that strapping a garmin to his back, this is not real.... yet!
There are microchips that can be implanted under the dogs skin but not working GPS tracking systems.
Almost all dog GPS systems do include a collar, although replacement pieces for sets can be purchased individually. http://www.gpsdogcollartracking.com/
A unversal gps does exist on a mount for gps systems. It however is difficult to find such gps systems that do exist for mounts.http://www.ask.com/web?q=universal%20gps%20mount&askid=fe64eb5e-ee59-49d3-9133-e5397efaa4b9-0-us_gsb&qsrc=999&o=1977&l=dir
Yes,GPS Dog Tracking Systems are safe for dogs. They are implanted easily under their fur, and do not bother the dogs at all. If your dog ever runs away, you can track him to see exactly where he is!
There are several different kinds of gps dog tracking systems available. It is best to check with your vet or dog trainer to get the best reviews or their opinions.
There are many different types of automotive GPS systems. But, one that has the best reviews is the tom tom. Here is a link to some of the others. http://reviews.cnet.com/best-gps/
Not all dog GPS systems are waterproof, but there are some. Garmin is a reliable brand of GPS tracker and many of its systems are waterproof for hunting and other activities. http://www.cabelas.com/electronic-dog-collars-garmin-astro-dc-40-gps-dog-tracking-system-1.shtml?type=product&WT.tsrc=CSE&WT.mc_id=GoogleBaseUSA&WT.z_mc_id1=753466&rid=40&mr:trackingCode=238B9892-BB96-DF11-9EB0-002219318F67&mr:referralID=NA
Yes, these do exist and are quite common.
Tomtom GPS systems exist in a variety of models. Rather than go into detail here, check out ebay.com or amazon.com for more details. You'd be amazed at the variety.
Golf GPS systems have the ability to tell you distance to the hole, terrain type, dog legs, etc. They usually are touch screen, and can be attached to your cart or bag.
to find the answer to your question: How are TomTom Rider GPS systems different from regular GPS systems? please see the following website to learn more: www.tomtom.com/
Alpine Electronics of America Systems make the GPS systems for Chrysler.