Since we have designed and tested Fi specifically for dogs, our product isn't optimized for cats, horses or any other pet other than dogs at this time.
We do not recommend using Fi to track your cat or horse, as we don't expect a comfortable fit or optimal performance.
The Fi Collar is lightweight and can comfortably fit dogs of various sizes, starting at 9.5" and up for Fi Series 3 Collars. We offer sizes Extra Small - Extra Large.
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