Bugsnax are creatures found on Snaktooth Island that resemble food. Side effects are that they also will transform the individual body parts of any Grumpus who eats them. There are various species of Bugsnax found throughout the game which can be caught using traps.
"Bugsnax" is also the title of the game. More details about it can be found here: Bugsnax (Game).
For information about the history and biology of Bugsnax, refer to this page, but be aware that it contains frequent and heavy spoilers!
Alphabetical listing of all known Bugsnax
There are 100 catchable Bugsnax.
Some Bugsnax take inspiration from multiple different "bugs". Multiple bugs may be listed as the basis for a particular Bugsnak, as long as they were confirmed by an official source (or apparent from the English name).