I was wondering why you are doing it at that age. I waited until they were 7-ish months so they could have any retained baby teeth pulled at the same time.
Bandit was EXTREMELY lethargic that whole entire night, and was very subdued the next day, but then was back to his normal self. Nala on the other hand came home and I let her cuddle on the bed for a few hours because she was a bit tired, but then woke up and there was no stopping her. We used and baby onesie for her so she wouldn't bite her stitches. There were no behavior changes, but if you are noticing aggression I think neutering can help that.
Good luck
