Have you tried a google search yet?
A simple google search on "gps tracking animals" gives a number of hits.
Your big problem will be to find something that will go that long without recharging; it takes battery power to do that and while it wouldn't be too hard for a large animal, it might be hard for a small animal.
Also you need to consider how the device will report back to you. Lots of the systems require cell phone service, so that would get expensive with a number of animals. Other systems use local radio, but that's limited to short distances.
How far away are you expecting to track? What kind of info are you looking for from the device?