Here's why:
* Animal metaphor: A figure of speech where an animal is used to represent a human quality or characteristic. For example, "He's a lion in battle" implies bravery and strength.
* Zoological simile: A type of simile that specifically compares a human to an animal. For example, "He's as brave as a lion" directly compares a person's bravery to a lion's courage.
Both phrases use animal imagery to convey a specific characteristic or emotion.