According to reports, the two heads of the snake react and eat separately.
“Sometimes one head wants to crawl in one direction and the other head in another direction,” zoo director Oleg Zubkov said.
Zoo officials say the snake sometimes even steal food from each other. Because of that, zoo workers have to put a barrier between the heads when feeding the snake.
The three-year-old, two-foot-long (60 centimeter) reptile is extremely rare, appearing once in every 50 years.
Visitor numbers had nearly doubled since it went on display in early July, said zoo keeper Yakovenko.
The two-headed snake will be on display at the zoo until Mid-September.