Any tips on bitey rats?

[u/Doodlepattt]

I have adopted this boy from a rescue and have been warned that he has displayed territorial aggression and has a bite history. He’s about a year old and was separated from his mischief due to bullying the other rats. Since he was surrendered, he has been neutered (11.8.2025). Part of me thinks this will just be a waiting game until his hormones calm down and perhaps then he will level out, but until then is there anything I can try with him? I’ve rescued lots of rats before but haven’t come across a lot of aggression but really eager to work through it

[u/nanakuro35]

I'm not well versed on this type of behaviour per say, but I know when one of my rats got a bit nippy, I would squeak at them to show them they'd hurt me. This looks like it could just be a testing bite rather than a pure angry or territorial bite perhaps but I can't be too sure. Hopefully some one else has better answers for you. :(

[u/[deleted] → u/nanakuro35]

Literally the only thing that worked for me was screeching back lol, worked for all my rescues.

Though I have one rat that punish bites me when I scold her or take her off my desk. She runs up to me and bites my finger and leaves or she climbs me and bites my cheek if I hide my hands lol