The description could also be an allegory used to represent something else.
It seems unlikely that God would use a mythical animal, or even a crocodile as "the foremost of God's Work"
Job 40:19
New Living Translation
It is a prime example of God's handiwork
English Standard Version
He is the first of the works of God
King James Bible
He is the chief of the ways of God
Holman Christian Standard Bible
He is the foremost of God's works
International Standard Version
He is the grandest of God's undertakings
NET Bible
It ranks first among the works of God