What figure speech is dog?

"Dog" is not a figure of speech. It's a literal word, referring to an animal.

Figure of speech is a word or phrase used in a non-literal way to create a particular effect. Some common examples include:

* Metaphor: Comparing two things without using "like" or "as" (e.g., "He's a lion in battle.")

* Simile: Comparing two things using "like" or "as" (e.g., "She's as sweet as pie.")

* Personification: Giving human qualities to inanimate objects or animals (e.g., "The wind whispered secrets.")

Let me know if you have another word or phrase in mind, and I can help you identify the figure of speech!