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A few scientists (to dedicate) are dedicated to researching mysterious unclassified beasts which other scientists (to refuse) refuse to believe exist. While these cryptozoologists (to keep) keep an open mind about their object of study, they (to be) are quick to point to cases in which the skeptics (to prove) were proved mistaken. For example, the pygmy hippopotamus, once claimed to be extinct, (to find) was found to exist in East Africa. The giant squid (to dismiss) was dismissed as the product of an overactive imagination until a specimen (to wash up) was washed up on a beach in 1873.
One of the most intriguing mysteries being investigated by cryptozoologists (to be) is "Bigfoot," a large hairy humanoid creature which many people (to claim) claim to have seen in parts of North America. In 1967, a film of Bigfoot (to take actually) was actually taken by an amateur photographer. Some scientists even today (to be convinced) are convinced of Bigfoot's existence, while others (to argue) argue that Bigfoot (just to be) is just an elaborate hoax.
The Loch Ness monster (to provoke) provokes similar disagreements among researchers. In this case some scientists (to argue) argue that while some creature may (to see) have been seen, it (to be) is probably a type of whale which (to penetrate) penetrates the loch when the Ness River (to flood) floods.
The Yeti of the Himalayas may (to be) be the most fascinating undiscovered creature.
Many climbers (to claim) claim that they (to see) have seen|saw the Yeti or its footprints, and local inhabitants of the mountains (to convince) are convinced of its existence. Such well-known mysteries as the Yeti and less well-known mysteries as the Congo dinosaur and the Queensland tiger will no doubt (to be) be the source of much speculation for years to come.
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