I feel like this might be my problem right now. I think my two baby boys are traumatized. They are only 5 months going on 6. I rescued a single male rat from a schools class pet at the beginning of the pandemic. After a couple of months getting to know Loki I decided to get the babies for cage mates. They instantly loved each other. Not even a entire month and Loki died suddenly. Ive been devastated. The Dumbo babies new something was wrong with him and huddled tight away from him. Their behavior is what alerted me to Loki. I removed Loki and did everything I could but he was gone by the next afternoon. He never came back. The babies stayed freaked out. They look at me like I'm sketchy and the one who took their buddy away. I've been bit 4 times. 3 by Ruckus and once by Rebel. But I don't think it was aggression really. They cautiously came over take sniffs then chomp into my fingers. Twice I knew they smelled like treats or food. But the other two times I'm not really sure why the deep chomps. Loki would nibble on me but never hurt me. These bites hurt like a Mother****** and bleed. So now I'm a little nervous to touch them and they are always nervous. They are never more than 6ft from me and I talk to them all day. Bring treats, do their food and water and tidy up. It's been suggested to me to separate them, get a female breed more, neuter, rehome. They were learning everything from Loki, watching him with me. Without him things have regressed instead of progress. Sorry I don't know if I should've started another thread but when you said trauma it caught my attention.