This mysterious photograph was taken by a student named Terri Leigh Cox in park in Dorchester, Dorset. According to Cox, the ape-like creature walking on all fours was only 100 yards away when she spotted it from her bedroom window.
The 17-year-old believes the creature was probably an escaped primate, but according to the Huffington Post, the closest monkey zoo, "Monkey World" is about 10 miles from the park and the zoo's staff have not reported any lost primates.
The teenager said she was shocked and couldn't believe her eyes at first:
"It looked about the size of a small gorilla. It was walking like one as well, using its arms and feet.
"It was definitely a monkey because you could tell by its hunched back and the way it scampered across the field and up the tree.
"It wasn't a black dog. I managed to get a photo but it quickly went out of sight.
"I couldn't see it very clearly. When I tried to get another shot it had disappeared.
"I have no idea what the monkey was doing there. It could have escaped if someone was keeping it as a pet."
A spokeswoman for Monkey World said all of its monkeys and apes were accounted for.
She said: "The image is not clear and it is difficult to make out, so we would be unable to confirm its identity.
"I can confirm that all of our rescued monkeys and apes are safe and well in the park."
[via Huffington Post UK]