Rat names
Izma
Jack
Jade
Jasmine
Jasper
Jay
Jesus-Freak (Jesus-Rat, or Jeebus, or Jesus for short)
Jet
Jewel
Jill
Jimmy
Jinx
Joe Cool (Joey)
Joey
Josh
Jr.
Junior
J.ust R.at (J.R.)
Kaiden
Kaiser
Kanga
Karen
Kenny Rogers (Kenny for short)
Keravny
Kia
Kino
Lady Godiva
Lambeau
Leena
Leilani
Lemon
Libra
Lightning
Lightning Bolt
Lily
Linaly (pronounced Linn-al-E)
Lister
Little Foot
Little Rat
Lloyd Wagner
Loki
Lola
Lollie
Loogaroo
Lottie
Louise (or Weezie Woo Woo)
Lucky
Lucy
Lunar
Lyra
Macduff
Mad Dog
Madeline (Maddie)
Magenta
Maisy
Mamma
Maple
Marigold
Marley
Marrical
Marshy
Martin
MaryJane
Mary Kate
Matthias
Matthilda
Mauwi
Mee Mee
Melpomene
Memnoch
Mercutio
Merlin
Metatron
Micro (pronouced Mee-Cro)
Miestreo
Miffy
Milo
Minerva
Minnie
Mint
Misfit
Missy
Misty
Mocha (short for Mocha Cappucino)
Mohave
Molly
Monica