'Beast's' in the Bible

“No one is so fierce [and foolhardy] that he dares to stir up Leviathan;Who then is he who can stand before Me [or dares to contend with Me, the beast’s creator]?

“He looks on everything that is high [without terror];He is monarch over all the sons of pride. [And now, Job, who are you who does not dare to disturb the beast, yet who dares resist Me, the beast’s creator? Everything under the heavens is Mine; therefore, who can have a claim against God?]”

Let his heart be changed from man's, and let a beast's heart be given unto him; and let seven times pass over him.