Thank you for your very important and fruitful reply, sorry I could not answer you back before because I was busy. we took him to the vet the day you did not reply to me she could not extract urine to check if there was a medical issue behind his behavior, she said the same other things you had mentioned very well in a much better and comprehensive manner her answer was in less details and less information thus she does not know what could be the exact problem.
I just need to know what could be bothering him most:
1- 2 months back we took him from our friend living in a confined 1 bedroom space were he was feeling very frustrated and lonely and always waiting at the door wanting to go out, now living with us in the compound he is an indoor and outdoor cat and happy
2- however he is sharing our house with 3 other cats 2 of them are sharing with his food and cat litter
a) one is a 4 months old male kitten friendly and playful he is always interacting and wrestling with in a friendly manner but the kitten always is chasing him around and is looking for his attention despite Mishmish being fed up sometimes and pushes him away, the kitten never give up chasing and wrestling playfully with Mishmish. when he is out in the compound he is more alone.
b) he is separated from the second male cat Rumi because they dont like each others and got into a nasty fight so now when rumi is out Mishmish is in and vice versa and when both are in they are in seperate rooms they never encounter each other since a month now and it is working well....
c) the third female cat there is no much interaction with her
All cats are spayed/neutered today we neutered the kitten too.
Awaiting your reply ... many thanks