Why do animals which hunt need good eyesight and a keen sense of smell?

Good eyesight: Many animals that hunt rely on their eyesight to locate and track their prey. For example, birds of prey, such as hawks and eagles, have excellent vision that allows them to spot small rodents or other animals from high in the sky. Similarly, big cats, such as lions and tigers, have sharp eyesight that helps them to see their prey in low-light conditions.

Keen sense of smell: In addition to good eyesight, many animals that hunt also rely on their sense of smell to locate their prey. For example, dogs have a much more sensitive sense of smell than humans, and can use it to track the scent of their prey over long distances. Similarly, many carnivorous mammals, such as bears and wolves, have a strong sense of smell that helps them to locate their prey, even when it is hidden from view.

By combining good eyesight with a keen sense of smell, animals that hunt are able to increase their chances of successfully capturing their prey.