A sentry dog normally does not perform as well at:

Sentry dogs are specifically trained for certain environments and tasks. In the context of guarding sensitive or controlled areas, their effectiveness can vary based on the surroundings and the potential distractions or hazards present.

In gasoline storage areas, for instance, the presence of volatile substances can create an unsafe environment for the dogs. Their performance can be negatively impacted by strong odors and chemicals, which may distract or even harm them. Additionally, the flammable nature of gasoline poses a serious risk, making these areas less suitable for a sentry dog's work compared to other environments.

On the other hand, radar sites, warehouses, and offices containing classified materials generally provide environments where dogs can utilize their training effectively, as they are less likely to encounter hazardous conditions or overwhelming distractions. Therefore, while sentry dogs are adaptable and capable in various roles, they typically do not perform well in settings like gasoline storage areas due to the unique challenges those environments present.