Does A Tom Cat's Behaviour Change At Certain Time Of The Year ?

Not because it's a different time of the year, but because if he isn't fixed, and there is a female near, he will smell the female in heat, and will want to react to that. If you get him fixed, he won't be like that anymore. Hope this helps, good luck to you.

Tomcat behavior is usually pretty consistent year around. Toms tend to be very affectionate towards their people and if they are allowed to be outside, they usually have several homes in the neighborhood. If there are females in the area, then he may disappear for a few days because he has gone "courting" Once the female gets pregnant then he will usually come home. Sometimes he will have battle wounds from fighting other tomcats. It is best to have your cat neutered to avoid contributing to the pet overpopulation problem.

Yes the females becomes sexually active mostly in February to april. So the male cat's will change in that time, the males will fight hard to domain the area they live in and the females.