Just a quick practice I did with Photoshop ( I kinda forgot a little bit lol) . Just removing a gorilla from the image not too hard. (I don't own this image this is just simple practice)
There, the gorilla looks like it was never there.
With the Gorilla gone I make the last touch ups on the photo.
As the shadow had almost vanished I proceeded to phase out the gorilla that was in the photo by making use of the background wood chips, dirt, and fence with the clone stamp.
Started to clone stamp around the gorilla to get rid of the dark shadow it was making (Not sure what the gender is)
I picked a simple image that was easy.