Ah okay - didn't bother reading the page as myb French doesn't extend much further than "deux bieres s'il vous plait"!
I find the picture somewhat unconvincing, like a grotesque stuffed toy posed for the photograph. The eyes are particularly strange being so dark and bulbous. The style of the write up, and the type of links shown on the page, all smack of crude sensationalism rather than a carefully researched piece.
I did a quick search for "French to English Translation" and did a bit of copying and pasting.
The following is courtesy of Google Translate:
Nowadays modestly baptized “medical curiosities”, human monsters know their heyday in the 19th century and at the beginning of the 20th century. They are then the main attraction of fairs and circuses, or many of them make their fortune.
Interest in these phenomena dates back to ancient times. Greeks and Babylonians, for example, saw in these creatures the deliberate work of the gods, and the Roman emperors sought them out in the empire to reunite them in their palaces. Yet some monsters are more fearful than fun, because their existence seems to involve the very notion of humanity.
The story of the Vichy monster is revealed to the public in a work called Monsters, Monsters, and Monstrosity. On January 6, 1897, a sixteen-year-old girl gave birth at the Vichy maternity hospital to an illegitimate child who only survived a few minutes. He is hermaphroditic and stricken with an exceptional abnormality: the absence of a brain and cerebellum, or anencephaly. That is, his skull stops just above the eyes. On the other hand, the newborn baby looks incredibly like a monkey. It has long limbs, large round eyes, and an anthropoid-specific thorax conformation. For Dr. Therre, chief physician of the Vichy maternity hospital at the time, these characteristics are the consequence not of anencephaly itself but of the act of fertilization.
The father and daughter fiercely deny any incestuous relationship, a fact can be confirmed by the extreme narrowness and resistance of the vaginal opening indicating an absence of normal sexual relations. Details that confirm Dr Therre's hypothesis of a hybrid origin of the anencephalon, although natural hybridization between two species seems impossible.
But it turns out that the girl has lived until then in a trailer in the company of her father and ... a monkey, "her only companion" she says because any contact with an outside person was forbidden to her. However, the monkey died the day after the teenager's childbirth, apparently from the stress of his separation from her. Dr Therre deduces from this that, unbelievable as it may seem, the monster brought into the world may have been the fruit of the young girl's sexual relations with the monkey ...
We will probably never know if Dr Therre was right, but a human-ape embryo is not beyond the reach of genetic engineering. So can we imagine that a violation of a natural law, susceptible of being transgressed in a laboratory, took place, for unknown reasons, in the spring of 1896?