As big as my @#!%&*(&!##@, 12 INCHES
Not very big about 3 inches tall
In the book : Mrs.Frisby and the rats of NIMH, Dragon is the big fierce cat.
big ears
it has big ears
the highest possible concentration is ~100%. but more to the point I believe you go into a coma and die at ~0.50%. that is at least for humans. I don't know about rats but I don't imagine it would be much greater. source:my psyc text book.
as big as a chihuahua dog. Its body length is 15 cm.
baby rats get big about 2-5 months.
Rabbits, mice, rats, snakes, carrion.
Trench rats grew so big that they could eat an entire corpse, because there were many men shot in wars there was lots of food allowing their populations to grow very big and their average size to increase
Rats can have various weights from 100 grams to 1kg
Their teeth are about the same size as a rats.