2. Fi Series 3+ Smart Dog Tracker Collar
Why we like it: upgraded GPS performance + AI-powered behavior/health signals (barking, licking, scratching, eating, drinking). Strong roadmap with Apple Watch support & long battery claims.
Best for: data-driven owners who want deeper wellness context alongside GPS.
3. Halo Collar (latest gen)
Why we like it: best-in-class virtual fence + training features; designed to prevent escapes with GPS boundaries (not just track after the fact).
Best for: yards, properties, and off-leash training in defined areas.
4. Garmin T5 / T5 Mini (pro backcountry)
Why we like it: serious, off-grid tracking favored by hunters and guides; no cell service needed. Requires a Garmin handheld; this is a field tool, not a pet-app gadget.
Best for: backcountry hikers, rural properties, working dogs.
7. Invoxia Minitailz (Health & GPS)
Why we like it: blends cardiac & respiratory monitoring with GPS—useful for seniors or at-risk dogs where wellness trends matter.
Best for: health-first buyers who still need escape alerts.
8. PETFON 2 (No subscription)
Why we like it: works without monthly fees using local RF/Wi-Fi/Bluetooth—handy where you want tracking on hikes without ongoing costs. Trade-off: shorter battery and limited range vs. cellular.
Best for: occasional hikers who dislike subscriptions.
9. Tractive XL (Big dogs, big battery)
Why we like it: rugged build for 50 lb+ dogs and a long-battery claim (up to ~1 month) for lower refresh/standby scenarios; same solid Tractive app.
Best for: large breeds, ranch dogs, longer intervals between charges.
Do I need a subscription?
Will it work without cell service?
What about Whistle?
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