When Destiny hears the tortoise blowing the dog-whistle to attract attention, Marion and Nelson say they cannot hear it. Whilst dog-whistles are inaudible to humans, both cats and foxes can hear even higher-pitched sounds than dogs, meaning Marion and Nelson would certainly hear anything Destiny did.
Marion and Nelson cannot hear the dog-whistle the tortoise uses to get Destiny's attention. In reality, cats and foxes are able to hear higher-pitched sounds than dogs - if she could hear it, they could.
Marion and Nelson cannot hear the dog-whistle the tortoise uses to get Destiny's attention. In reality, cats and foxes are able to hear higher-pitched sounds than dogs - if she could hear it, they definitely could.