YOU SAID:

i was about to say woof but then realized that i am a cat

INTO JAPANESE

私はうそを言うつもりでしたが、私は猫であることに気付きました

BACK INTO ENGLISH

I intended to say a lie, but I noticed that it was a cat

INTO JAPANESE

私はうそを言ったつもりだったが、私はそれが猫であることに気づいた

BACK INTO ENGLISH

I intended to say a lie, but I noticed that it was a cat