To determine how much closer the Alaskan Malamute is to the hydrant compared to the German Shepherd, we need to calculate the difference in their distances from the hydrant.

The German Shepherd is 120 feet away from the hydrant, while the Alaskan Malamute is 75 feet away. To find the difference, we subtract the distance of the Alaskan Malamute from the distance of the German Shepherd:

120 feet - 75 feet = 45 feet

Therefore, the Alaskan Malamute is 45 feet closer to the hydrant compared to the German Shepherd.