Mine is a multiple cat household. I used to feed a kitten outside my house. I adopted him and brought him into the house when he was over an year. He used to shout continuously in the beginning. I booked an appointment for his neuter surgery. But due to lockdown his surgery has been cancelled. He's now 2 years old. Now his behavior is unbearable. He's shouting very loud 24/7 except while he was eating and sleeping. My neighbours are complaining about the noise. I tried to take him to the vet 2 times now. But I can't.. He's biting me. He used to be nice with me before but now he's running away from me. The real problem is all my cats are getting disturbed. My neutered Male cats are fighting with each other. They are having serious injuries. Even my female cats are getting very angry with this cat. His own sister is getting irritated with him. I'm really very scared for all my cats. He has become very aggressive. I'm literally hiding all my cats from him. It is a mess now. My mom is telling me to leave this cat. What to do? Please give me some solution!