| "'Feejee Mermaid' has become the generic term for the many fake mermaids that can be found around the world..."
This article contains information relating to a hoax. According to Cambridge dictionary a hoax is "a plan to deceive a large group of people; a trick."
The Dahu is a legendary creature well known in France, Switzerland, and the neighboring regions. Its popularity began to soar toward the end of the 19th century and become famous during 20th century, but today it is regarded as a hoax, a joke, a fictional creature to fool people. Dahu is described as a mountain goat-like animal with legs of different sides having differing lengths to walk upright on the steep slopes of its mountain environment. It can only walk around the mountain in one direction.
Legend attributes various differing descriptions to the animal, including the laevogyrous dahu (which has shorter legs on the left side, and thus goes around the mountain counter-clockwise) and the dextrogyre dahu (which has shorter legs on the right side, and thus goes around the mountain clockwise).
It is also said that male Dahus have legs shorter on the right side and that females have shorter legs on the left side, thus making them walk in opposite directions around the mountains enabling to find each other and mate. Also, the male dahu has testicles that drag down onto the ground leaving a scent trail for members of the opposite sex to trace. Males also use the scent trails to find their next molestation victim, for dahus are known for harassing each other to assert dominance.
French pranksters state that catching a dahu involves two people, one with a bag at the bottom of the mountain slope and another who is good at making dahu sounds. The latter stands behind a dahu and makes the noise. When the dahu turns around to see, it loses its balance and rolls down the hill to the person with the bag at the bottom.
Another method is to have pepper ground onto a large stone; when the dahu, while grazing, comes and sniffs the pepper, it would sneeze and knock itself out against the stone.
More information here : https://histoiredahu.wordpress.com/