Okay... what else can I say about my rats? I was surprised to see so quickly... like in the first day... that they had really distinct personalities. Hi-Chew is more aggressive and explores and climbs a lot, while Tapioca is quiet and shy and likes to cuddle. I wonder if it's because Hi-Chew has like these gigantic rat balls while Tapioca is like... we were worried he might be female, his balls are so invisibly small. But we've had it confirmed that he's male and he's not pregnant yet, so I think he's definitely male, lol.