Why is it when your German Shepard poos on grass it kills the grass no matter how quick you remove it off the grass?

When a German Shepherd (or any dog) poos on grass, it can kill the grass due to the high nitrogen content in their feces. This nitrogen, while beneficial in small amounts, can become concentrated in one spot, leading to "burning" of the grass. Even if you remove the feces quickly, the nitrogen can still affect the surrounding soil and grass, resulting in dead patches. Additionally, the acidity of dog urine can contribute to grass damage, further compounding the issue.