Our 2 yo female Hailey has taken to lying on the backyard lawn in the heat of the sun. It's been hot here for the past few weeks, mid-90s. While our other other two pups (a Cocker and a Corgi) are busy sniffing around and doing their business, Hailey lies on her side, legs stretched out, warming her belly. I thought greys were supposed to be temperature sensitive, but this one seems to love the heat. She stays like that for not too long, then comes in when the others do. This happens several times a day. With her thin coat on her underside, is it possible for her to get sunburned?