I really love the dog GPS, but I don't buy any yet for my Basenji. I hope I must buy it soon.
I buy a 1.6M fashion dog collars for three months, which I buy from [URL removed]
Delta Airlines and GPS pet tracking device
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Article about Delta and GPS tracking for pets - http://www.bloomberg.com/news/articles/2015-03-31/delta-offers-gps-pet-tracker-to-ensure-dogs-have-a-happy-flight