The Bible often depicts spiritual conditions and character with animals. Beginning with satan and the serpent, a continuous line of animals are used to describe the traits of demon spirits as well as the finer qualities of believers.
Why? Better question: Should be look at spiritual beings and their traits with these same insights today, or have we moved beyond the need for it?
Obvious answer. While evil has certainly learned to use technology and science, moving into the modern era with increasing relevant expressions of ancient evils, the evils are ancient. Not new.