The rottweiller is laying with its head and paws on the first step of the green carpeted stair .
It is improbable that the black dog is laying with its heads and paws on the first step of the stair .
There is a very good chance that the black dog is laying with its heads and paws on the first step of the stair .
It is improbable that the black dog is laying with its heads and paws on the first step of the stair .
The black dog is laying with its heads and paws on the first step of the stair .