What word copies the sound a dog makes in English?

In English, we write a dog's bark as 'woof' — it's the word people chose to copy the sound dogs make when they bark.

'Moo' copies a cow's sound, and 'tweet' copies a small bird's chirp, so neither one matches what a dog says.

Different languages hear the same bark differently — in Japan people write it as 'wan-wan,' showing how fun and different these copied animal sounds can be around the world!