The related adjective for rat is "ratty".
Rattus
Pig Latin for rat is at-ray.
The Latin word for 'rat' is Mus. It's the same noun as for 'mouse'. The Latin word for 'mouse'- or 'rat-trap' is 'muscipula'.
The adjective form for the noun Latin is Latin; Latin language, Latin music, Latin countries.
The Latin adjective for Phoenician is "Poenicus."
Mus.
ratusFor example: Ratus norvigicus, the Norway Rat
no, It is not a adjective it is a verb.
An Asian black rat is an alternative term for the black rat.
Cavia porcellus does mean little rat in Latin.
"Urban", from the Latin.