Themes to Name a Group of Rats After...

Angels
Animals
Authors
Alcohol Types
Alcohol Brands
Artists

Brand Names
Bible Names
Board Games
Buffy the Vampire Slayer Names
Book Titles

Chess Terms
Cheeses
Colors
Constelations
Cartoon Characters
Comic Book Characters
Candy Brands
Computer Terms
Cereals
Cars
Countries

Disney Character Names
Days of the Week
Department Stores
Dog Breeds

Emotions

Flowers
Fruits
Fast Food Chains

Gems
Greek Gods

Herbs
Human Names

Last Names
Locations

Movie Stars
Mixed Drinks
Minerals
Months

Numbers
Native American Words
Nuts

Plants
Planets
Pop Brands
Pastas
Presidents
Poets

Santa's Reindeer
States
Spices
Simpson's Characters
Singers/Bands
Sports Terms
Street Names
Star Trek Characters
Shoe Brands

Teas
Tools
Trees
T.V. Characters

Vegetables