My husband's cousin has a D.A.D. I didn't even know he had a type 1 cousin. So I was really surprised when his mother told him she was getting the dog! From what his mother told him, his cousin is afraid to try a CGM so the dog was what she wanted. She's had it about six months now and really likes it. That's all I know about it I had a miniature dachshund who would alert me or my husband when I was low during my sleep, without training. He'd jump on my face or if I was out, he'd bark at my husband or jump on him. I've always had this problem of never being able to tell when I was low during my sleep. I had another miniature dachshund growing up, who'd do the same thing. Jump on my face when I was low. I have a miniature dachshund now who can tell when I'm low, but doesn't tell me. I think there's something about the way we smell when we go low and/or high. Bear, my dog, sometimes tells me during the day, so I praise him, but he doesn't do it constantly. But since I have the Dexcom, and will be wearing my pump starting next week, I'm no longer worried about nighttime lows.