What is define cryptid?

A cryptid is a creature or entity that is believed to exist, but there is limited or no scientific evidence to prove its actual existence. These creatures often have stories and legends associated with them, and sightings are reported by eyewitnesses. Examples of cryptids include Bigfoot, the Loch Ness Monster, and the Chupacabra. These creatures are the subject of interest and investigation by cryptozoologists, who study unknown animals and creatures thought to be extinct or only existing in folklore.