Job 18:11-13

Bildad described something terrible that chases the wicked man. Bildad did not actually say that he was thinking about a wild animal.

So the wild animal is just a description of the wicked man’s troubles. His troubles seem to be everywhere. And the troubles become worse and worse. In the end, the man dies because of his troubles. And his death is a terrible death.

Job had terrible skin troubles (Job 2:7). His troubles seemed impossible to escape from (Job 16:9-12). And these troubles were getting worse and worse (Job 16:13-14). So Bildad thought that Job must be a wicked man.