This is the moment a sloth gatecrashed a holiday snap in the jungle.
A group of youngsters on an International Student Volunteers expedition from all over the world had been helping cut paths in the dense woodland on Costa Rica to allow researchers to get around.
And after completing their back-breaking charity work, they decided to have a group picture taken as a keep sake.
But what they didn't expect was this inquisitive sloth slowly lowering himself down into the frame as the group smiled for the camera.
Scroll down for a gallery of the funniest animal photobombs ever
Striking a pose: The fluffy fella agrees to join in a group photo
Manuel Ramirez, who is an anthropologist and tour guide for International Student Volunteers, had decided to take the snap, but was not aware that a fame hungry sloth was waiting above
Manuel, 44, said: "There was a big group of us helping cut paths in the jungle. I thought it would be nice to take a group shot.
"As I looked through the camera lens I could see something creeping in to the frame.
"when I realised it was a baby sloth I clicked the button as fast as I could, not that he was going anywhere fast "
He added: "I thought it was too good a picture opportunity and so rather than move I just took the picture with him in it.
"It has become a bit of a talking point for everyone. None of us will ever forget the trip, especially when we look back at this picture.
"I'm glad we saw the sloth that day as he made us laugh when we were very tired.
"Now we can share this moment with all our friends."