てんじくねずみじゃなかったです
天竺鼠じゃなかったです
tenjikunezumijanakattadesu

Noun
Desu Copula

The polite, past negative form of てんじくねずみ

1. Was not a guinea pig.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana