It's not a simple wild boar but a species live in Africa in forests and woody savannas around rivers. When I worked a bit at the local zoo previous summer, I took care of two of them. They are not as large as European wild boar. We were not allowed to step into the cage when they are in that part of it, but a guy said once he made a mistake and left the cage door open, then he went to clean up another cage. He turned round and saw that one of these pigs standing in the door and calmly watch what is he doing He then herded it back to it's place and locked the door properly that time.