The reasons why male cats are depressed and have reduced appetite:

1. It may be caused by depression, new environment, illness and other factors. When a male cat first arrives in a new environment, he may have a stress reaction. It is recommended that the owner use snacks or toys to divert his attention.

2. It may be that the cat has undergone sterilization surgery and the hormones in its body have changed. Male cats will become depressed after being neutered or kept in a cage for a long time, leading to low mood and reduced appetite. It is recommended that owners spend more time with male cats.

3. It may be that the cat is relatively lonely by itself, without the company of other cats, resulting in a depressed mood. Pet owners can take their cats out to play appropriately.

4. It may be that the cat has not eaten the food it likes and is in a bad mood. It is recommended that pet owners pay more attention to their cats' diet and feed their cats the food they like to eat, which can make the cat happy and increase their appetite.

5. Cats that have not been neutered may be in estrus and want to find a partner, so they may be depressed and have a reduced appetite. If the pet owner does not have the need to breed the cat, it is recommended to take the cat for sterilization surgery as early as possible to avoid the trouble caused by estrus.

6. There may be certain problems with the cat’s gastrointestinal tract, resulting in reduced appetite and depression. You can feed the cat some probiotics to regulate the gastrointestinal tract, and take the cat for further examination and treatment.