1- Is it necessary/obligatory for a man to remove hair around the anus, or just armpit hair and pubic hair?
2- Does removal of hair around the body depend on the amount of days the hair has been growing or the actual lenght of the hair before it is obligatory to remove it?
-As in, is it a certain amount of days before it becomes obligatory to remove it or if it becomes longer then a certain lenght?

Removal of hair in all mentioned cases is recommended, not obligatory.