Best GPS Dog Collars and Trackers (2026)
GPS dog trackers Treeline Review and TechGearLab rate best: Tractive Dog 6 and Dog 6 XL, Fi Series 3+ and the Garmin Alpha T 20 for no cell service.
Quick answer: my top pick is the Tractive Smart Dog GPS Tracker (Dog 6) (best overall). The top GPS tracker at both Treeline Review and TechGearLab.
- Best for large dogs: Tractive XL Smart Dog GPS Tracker (Dog 6 XL)
- Slimmest collar: Fi Series 3+ Smart GPS Dog Collar
- Best for no cell service: Garmin Alpha T 20 GPS Dog Tracking Collar
Disclosure: I may earn a commission when you buy through links on this page, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Picks are based on published research, not hands-on testing. Read my affiliate disclosure.
At a glance
| Product | Type | Water resistance | Subscription | Price at Amazon |
|---|---|---|---|---|
| Tractive Smart Dog GPS Tracker (Dog 6)Best overall | Cellular GPS tracker | IP68 | Required | Check price for Tractive Smart Dog GPS Tracker (Dog 6) |
| Tractive XL Smart Dog GPS Tracker (Dog 6 XL)Best for large dogs | Cellular GPS tracker | Not published | Required | Check price for Tractive XL Smart Dog GPS Tracker (Dog 6 XL) |
| Fi Series 3+ Smart GPS Dog CollarSlimmest collar | Cellular GPS collar | IP68 | Required | Check price for Fi Series 3+ Smart GPS Dog Collar |
| Garmin Alpha T 20 GPS Dog Tracking CollarBest for no cell service | Radio GPS collar | 1 ATM | None | Check price for Garmin Alpha T 20 GPS Dog Tracking Collar |
“Not published” means none of my cited sources list that spec. Prices aren't shown because they change often; “Check price” opens the current listing. Availability and shipping vary by region; links go to US stores.
The short answer
For most dogs, get the Tractive Dog 6. It’s the top pick at Treeline Review and TechGearLab, with fast, accurate tracking and health monitoring. Big dog? The Tractive Dog 6 XL has a much longer battery. For a slimmer collar with long battery life, the Fi Series 3+ is Treeline’s runner-up. If you hike or hunt where there’s no cell service, the Garmin Alpha T 20 works without it and has no subscription.
How I picked
I did not test these trackers myself. I compared Treeline Review’s GPS dog collar guide with TechGearLab’s GPS dog collar rankings, and kept models that came up as winners for everyday tracking, large dogs, a slimmer collar, or use with no cell service. Specs come from those reviews and the manufacturers’ listings already cited on this page.
Specs I compared (from this page)
| Pick | Type | Subscription | Water resistance |
|---|---|---|---|
| Tractive Dog 6 | Cellular GPS tracker | Required | IP68 |
| Tractive Dog 6 XL | Cellular GPS tracker | Required | Not listed |
| Fi Series 3+ | Cellular GPS collar | Required | IP68 |
| Garmin Alpha T 20 | Radio GPS collar | None | 1 ATM |
Figures above come from the product specs already listed on this page. If a detail is not published there, I mark it Not listed rather than guessing.
Which tracker fits you
- Everyday tracking with the most accurate, fastest cellular GPS in these sources: Tractive Dog 6, the top pick at Treeline Review and TechGearLab. A subscription is required, and it clips onto your dog’s existing collar.
- A large dog (Tractive lists the XL for dogs over 44 lb) and a longer battery: Tractive Dog 6 XL. Tractive rates the battery up to 6 weeks with Power Saving Zones; Treeline saw about 35 days. It is bulkier, and a subscription is still required.
- A slimmer full collar and long battery life: Fi Series 3+, Treeline’s runner-up, sold in five sizes. Location data was less accurate than the Tractive’s, and the subscription is the expensive one in this group.
- Hikes or hunts with no cell service, and no tracking subscription: Garmin Alpha T 20. Treeline notes it needs a separate Garmin Alpha handheld.
What to look for
- Cell coverage or radio. Cellular trackers need service; radio collars don’t but need a handheld or app setup.
- Subscription. Cellular trackers need a plan; over a dog’s life that is often the biggest ongoing cost. The Garmin has no subscription for dog tracking.
- Battery life. Health features drain batteries faster; TechGearLab got about a week from the Tractive.
- Fit. Make sure the tracker suits your dog’s size and collar. For walks, pair it with one of my no-pull dog harnesses.
For an older dog who still loves car trips, see my dog ramps for senior dogs.
My picks in detail
1. Tractive Smart Dog GPS Tracker (Dog 6)
by Tractive
- Type
- Cellular GPS tracker
- Water resistance
- IP68
- Subscription
- Required
The top GPS tracker at both Treeline Review and TechGearLab. Treeline found it had the best location accuracy, fastest connection and longest battery life of the cellular trackers it tested; TechGearLab praised its fast GPS and health tracking. It clips onto your dog's existing collar.
- Fast, accurate cellular GPS
- Uses multiple cellular carriers
- Heart and respiratory rate monitoring
- Subscription required (Treeline lists a Basic annual plan)
- Bulkier than the Fi (per TechGearLab)
- Battery life varies: up to 14 days claimed, about a week in TechGearLab's use
Opens Amazon in a new tab. Price and stock can change. Availability and shipping vary by region; links go to US stores.
2. Tractive XL Smart Dog GPS Tracker (Dog 6 XL)
by Tractive
- Type
- Cellular GPS tracker
- Battery
- Up to 6 weeks (Tractive, with Power Saving Zones)
- Dog size
- Over 44 lb (per Tractive)
- Subscription
- Required
Treeline Review's pick for large dogs: the same app and tracking as the Dog 6 with a much longer battery, rated up to 6 weeks by Tractive (with Power Saving Zones) and about 35 days in Treeline's testing. Tractive makes it for dogs over 44 lb.
- Battery rated up to 6 weeks by Tractive; about 35 days in Treeline's testing
- Same features as the Dog 6
- Sits well on thick collars
- Big and bulky
- Subscription required
Opens Amazon in a new tab. Price and stock can change. Availability and shipping vary by region; links go to US stores.
3. Fi Series 3+ Smart GPS Dog Collar
by Fi
- Type
- Cellular GPS collar
- Water resistance
- IP68
- Subscription
- Required
- Sizes
- XS–XL, 9.5–31 in necks (per Fi)
Treeline Review's runner-up to the Tractive and its pick for advanced activity tracking. It's a full collar with a slim tracker, long battery life and a charging base, but location data was less accurate than the Tractive's. Fi sells it in five sizes, from XS (9.5 to 11 in, dogs under 10 lb) to XL (20 to 31 in, 95 lb and up).
- Slim, low-profile design
- Long battery life (about 10 weeks in Treeline's use)
- Charging base and built-in light
- Expensive subscription (Treeline lists a six-month plan)
- Less accurate location than the Tractive
- App needs to run in the background
Opens Amazon in a new tab. Price and stock can change. Availability and shipping vary by region; links go to US stores.
4. Garmin Alpha T 20 GPS Dog Tracking Collar
by Garmin
- Type
- Radio GPS collar
- Subscription
- None
- Water resistance
- 1 ATM
Treeline Review's pick for rural areas: the only collar it tested that works without cell service, sending your dog's location to a Garmin handheld with no monthly fee. It's built for hunting dogs.
- Works with no cell service
- No subscription for dog tracking
- Shows distance to your dog; hunting-dog alerts
- Requires a separate, expensive Garmin Alpha handheld
- Big, bulky collar
- Treeline notes a higher device price than the cellular trackers
Opens Amazon in a new tab. Price and stock can change. Availability and shipping vary by region; links go to US stores.
Frequently asked questions
Do GPS dog collars need a subscription?
Cellular trackers like the Tractive and Fi do; Treeline Review lists required plans for both. The Garmin Alpha T 20 has no subscription for dog tracking, but Treeline notes it needs a separate, expensive handheld.
Cellular or radio GPS?
Cellular trackers work anywhere with cell service and show your dog's location on your phone. Radio collars talk directly to a handheld or your phone, so they work with no cell service, which Treeline Review says makes the Garmin the pick for backcountry trips.
Is an AirTag good enough?
Only as a backup. TechGearLab calls the AirTag a just-in-case device for a well-behaved city dog, and Treeline Review picks it as a no-subscription tracker for urban areas.