Quoting Hairspray:" Oh, I'm so happy to see this. What's a head tilt? If the kids fingers smell like food or are sweaty (salty) they will nibble."
I talked to the lady I adopted him from and she said it was something where his head literally tilts to one side instead of being straight. It isn't dangerous, it doesn't hurt him at all, but it is a defect. We named him tilt, haha. He snuggled into me as soon as I picked him up and I was just in love. The other one is whiskers.
Yeah, the one likes to nibble fingers when they're put in the the cage. If you reach in he doesn't, only if you stick a finger into the cage. He does it really gently at first, but I think because the kid didn't pull back when it was done gently he did it a little harder. Poor kid, there was a LOT of blood (since it was on a fingertip).
He's forgiven the rat though. He tries to share his sippy cup and wants to give them kisses, haha