I have a tom cat(indie breed). It was few months old when we adopted him. He wasn't too aggressive initially. But from the last month his behaviour is different. He particularly hates me after coming from outside and gets aggressive by smelling my clothes after coming from outside. Our neighbours also have female cat. That cat urinate at our door and he goes crazy after it makes weird noises and attacks me only. We have vaccinated him last month. I could not understand his psychology. Why he hates me sometimes when in heat and other times he chooses me only to play to pet him.