Definition & Meaning of "doggo"in English

What does "doggo" mean in casual slang?

The structure adds the playful suffix "-o" to "dog," creating a cuter, more informal version of the word. It is used to describe a dog, often affectionately or humorously, especially in online pet communities and social media captions. People typically say "Look at that doggo" or "What a fluffy doggo" when sharing photos of dogs. The term originated in early 2010s internet culture, particularly on Reddit, Tumblr, and Twitter, as part of a trend of using playful animal words like "pupper," "floof," and "smol," and remains common in pet loving circles and memes.