What is the primary reason rabies poles should only be used on dogs?

Using rabies poles on cats may cause injury is the correct choice because rabies poles, which are long poles with a loop at the end, are specifically designed to capture and control animals to prevent potential bites during a rabies exposure situation. Cats are generally smaller and may be more easily harmed by such equipment due to their size and agility. The risk of injury occurs not only from the physical restraint but also from the stress and panic that the pole could provoke in a cat, making them more likely to react defensively.

Additionally, using a rabies pole on a cat may not just risk physical harm but could also exacerbate the cat's fear or anxiety, potentially making future handling more difficult and dangerous for both the animal and the handler. Therefore, it is crucial to use appropriate methods that ensure the safety and well-being of the animal, which is why the primary reason is focused on the potential for injury when handling cats with that equipment. Other options do not emphasize the safety concerns or the specific design limitations of the rabies pole in relation to cats.