Translation of "behemoth" into Chinese

Probably the most impressive yawn of all is that of the hippopotamus, or Behemoth.

但最令人惊叹的,相信莫过于河马打呵欠了。

Behemoth’s “power is in its hips”—the muscles in its back.

河马的“力量在腰间”,也就是背部的肌肉。