Definition & Meaning of "pupper"in English

What does "pupper" mean in casual slang?

The structure is a playful alteration of "puppy," adding the "-er" suffix for a lighter, more internet friendly sound. It is used to describe a young or small dog, often affectionately, as a cute and endearing term. People typically say "Look at that little pupper" or "Who's a good pupper?" when talking to or about dogs online or in person. The term originated in early 2010s internet culture, particularly on Reddit and Twitter, as part of a trend of using playful animal words like "doggo" and "smol," and remains common in pet loving communities and social media captions.