What are the symptoms of a male cat in estrus:

1. A male cat in estrus will have symptoms such as howling, urinating, and raising its tail. Male cats will start to go into estrus around 6 months old. During the estrus period, they may urinate indiscriminately, howl, etc. to attract cats of the opposite sex.

2. During the estrus period, male cats may jump out of windows or run away from home in order to court a mate. It is recommended to keep doors and windows closed at all times to avoid accidents with male cats.

3. Frequent estrus in male cats may cause diseases such as anuria.

4. Loss of appetite may occur. Cats in estrus may also suffer from loss of appetite and like to squat at the door and scratch the door with their claws.

5. Acting restless, sticking out your butt, and rolling around on the ground.