If you have a male cat, you may be wondering if he's in heat. Here are some signs to look for:
1. Increased interest in female cats. If your male cat starts following around a female cat or trying to mount her, it's a good sign he's in heat.
2. More vocalization than usual. Male cats in heat will often yowl or cry more than normal. This is their way of trying to attract females.
3. restless and agitated behavior. A male cat in heat may pace back and forth or seem generally restless and unable to settle down.
4. changes in appetite. Some male cats will lose their appetite entirely when they're in heat, while others may eat more than usual (perhaps because they're expending more energy).