The pegging position bulldog is an excellent choice when the receiver is much taller than the giver - the giver can almost perch on top of the receiver's ass. This position often requires a fit giver; it can be a workout.
The receiver is on their hands and knees and the giver above and behind with legs on the outside. This position rates very high for prostate stimulation. The longer legs of the giver, the stronger thigh muscles they will need.
When in the pegging position Bulldog, the receiver can be a sturdy support for the giver, and receiver's cock is accessible with the giver doing a reach-around. Heels can be worn by the giver to adjust height.