ゴールデンレトリバーじゃなかったです
gōrudenretoribājanakattadesu

Noun
Desu Copula

The polite, past negative form of ゴールデンレトリバー

1. Was not a Golden Retriever.; It wasn't a Golden Retriever.

Past/Perfective
Negative
Polite
Casual Register