YOU SAID:

the dog went to the park and he peed on a bush

INTO JAPANESE

犬は公園に行き、彼は茂みの上でおしっこをした

BACK INTO ENGLISH

The dog went to the park and he peed on the bushes.

INTO JAPANESE

犬は公園に行き、彼は茂みの上でおしっこをしました。

BACK INTO ENGLISH

The dog went to the park and he peed on the bushes.