How can you if tell a male cat has just mated with female?

It's impossible to tell definitively if a male cat has just mated with a female just by looking at him.

Here's why:

* No visual signs: There are no outward physical changes or markings on a male cat that indicate recent mating.

* Behavior: Male cats don't exhibit any specific behaviors after mating that would be obvious to an observer.

* Internal process: Mating is an internal process, and the only way to confirm it would be through direct observation or DNA testing.

Important Note: It's crucial to remember that cats are sensitive creatures and can experience stress and discomfort during mating. If you're concerned about your cat's well-being, consult with a veterinarian.