My dogs have always loved to sunbathe. When we lived on Whidbey Island, there was a mound where the entrance to the septic tank was and our dogs loved to lie across the mound.
when its cold out they will always want to be in the sun. Even when it’s super cold, my dogs will nap right out on the ground as long as it’s sunny where they choose to stay.
If they are tanning I wonder what the color changes would be??
Really though my dogs love to lay in the sun too, it is like people have said, it’s comfy and relaxing, but if they get too hot they move. Also not a good idea if it’s sweltering out to let them lay in the sun.