Funny Jokes

There were four blondes in jungle. When they were returning, they came across a set of tracks.
Amazed with the track, the first blonde opined that, "The track must be of donkeys."
The second blonde said, "No, those are deer tracks."
The third blonde said, "You're both wrong, those are monkey tracks."
The fourth blonde saw them all arguing and the coming train hitting them head to toe.
She was still confused 'what kind of tracks were these'?