Rac

According to folk legend, racs are legendary eses which 'blind' prey by 'screaming', drowning out the prey's echolocation. They are also highly aggressive, purportedly attacking Pitlupuli on sight. Size varies wildly between tales from a wing-span of no more than 40 centimetres to up to 5 metres, leading to the widespread belief that they shrink as they become increasingly enraged so as to be harder to shoot or attack, whilst their teeth and claws grow longer.