She was a strange creature the other two where boring in comparison, she was secondhand (had babies and got taken back to the pet shop so was a half price rat).
I'm still not entirely sure if he didn't just catch her out the back of the shop, she was black with a white belly, she did things the other two didn't.
She carefully weaved nests out of news paper and objected to any other kind of bedding, pushing it out the sides of the cage.
She didn't like the commercial rat food and throw it all in the poo corner and then started throwing it out the side of the cage when we still gave her it.
She never licked herself, she'd put her hands under the water bottle got a drop and then washed with it.
I had gerbils at the same time, she hated them, every time they managed to get near her cage she punched them in the face, she never bit anything or anyone (unlike the other two).
She was frightened of heights, seriously so, you couldn't pick her up, she'd dig all her claws in and scream, had to build little steps for her to get in and out the cage 3 inch drop was too much for her.
Very strange rat.