“Jo-Jo the Dog-Faced Boy” was presented to sideshow audiences as a freak of nature, raised by a savage in a Russian cave and prone to barking and growling incoherently when upset.

In reality, Fedor Jeftichew was born in St. Petersburg in 1868, and he spoke Russian, German, and English. His appearance was due to a medical condition called hypertrichosis, or excessive hair growth, the same disorder that produces “bearded ladies.”

Jeftichew inherited the condition from his father, Adrian, who had performed in French circuses. When his father died, Fedor eventually signed with an American show, going on to tour Europe and the United States extensively. He died in Turkey in 1904.