7aa1540d__Management_Guidelines__UC_IPM_Characteristics_of_Adult_Rats__Norway_rat
[Characteristic] body weight [Roof rat] 5 to 10 ounces [Norway rat] 
7 to 18 ounces
l a r g e , r o b u s t
m o s t l y g r a y
7 t o 1 8 o u n c e s
s h o r t e r t h a n b o d y , d a r k a b o v e a n d p a l e b e l o w , s c a l y
b l u n t m u z z l e
d o n ’ t r e a c h e y e s
Rat Management Guidelines--UC IPM
Norway rat