[OoC: The ceiling, directly above your head is 20' but the Dog (using it's scent ability and a move action to detect the direction of the scent) is looking upward somewhere around a 45 degree angle meaning whatever the dog is barking at is approximately 30ish feet away as long as the ceiling remains a uniform 20 feet. The range of the Scent ability is also usually 30'. ]
[OoC: We will say that people with darkvision can see about 20' now.]
[OoC: We will say that people with darkvision can see about 20' now.]