garuru
A low, menacing growl from the throat of a dog or wild animal warning you to stay away. The sound before a potential attack — tense and intimidating.
💡Approaching a guard dog too closely — 'The dog bared its teeth and growled garuru.'
番犬ががるると唸って威嚇した。
The guard dog growled garuru threateningly.
The stray dog bared its fangs and growled ___ at the stranger.
野良犬が牙をむき出しにして、見知らぬ人に○○と唸った。