I am also over the top with wanting to stay tethered to our dogs in the RV.....it's a given to have a Temp monitor( I use the Verizon based Marcell), I also use a Web Cam having Verizon, AT&T and T mobile hot spots......but I can always find someplace where cell is no good at all even with all the latest boosters and gadjets! Yellowstone historically is one such "dead Zone"!
This is where I agree with a previous poster, our dogs are our responsibilty, one that we take seriously and happily...if one of us has to stay behind to ensure tranquality, then that's what happens!