A 62-year-old snake laid an egg without the aid of a male, which is a matter of confusion for experts, according to a story published in The Independent.
A 62-year-old female ball python laid 7 eggs in St. Louis Zoo, Missouri, despite not being near a male for at least two decades.
This is a strange incident for this snake, which is believed to be the oldest surviving snake.
It is also believed that these species usually stop laying eggs long before they reach their 60s.
"It will definitely be the oldest snake we know in history," said director of reptile science at the zoo, Mark Wanner.
This is unusual, Wanner added, but it is not uncommon for snakes to reproduce asexually.
Snakes sometimes store sperm to delay fertilization.
And the snake laid eggs on 23 July.
The St Louis Post-Dispatch reported that 3 of the eggs were placed in an incubator and expected to hatch within a month, while two eggs were used for genetic samples, and the other two did not survive.
Genetic sampling will show if the eggs have been reproduced through sexual or asexual contact, which is called facultative parthenogenesis.
The only other globular python in the zoo is a male about 31 years old.