Pupgender is a faunagender that falls under the canisgender umbrella, and is closely related to neurogenders, although it can be used by neurotypical people. It was defined as "A gender that is small, lively, cute and any other quality associated with puppies, that is puppy-like and/or connected to puppies. Made with system littles and non-k1nk age regressors in mind, but can be used by anyone. May or may not be a kingender. Do not use if k1nk." The term was coined using this definition by Tumblr user xeno-aligned in April of 2019.
In March of 2020, Pupgender made a resurgence on Twitter, with user kandipaws creating a flag and carrd to describe it. The definition has since been somewhat simplified and is now described as "a gender identity that closely relates to or feels very strongly like dogs or puppies", although the original definition is widely used and still remains. Pupgender is often considered the dog-like counterpart to catgender, despite it being a subgender and not an umbrella term.