In Starfield, fauna refers to living beings or alien life forms found on different planets and moons. Fauna come in different shapes and sizes, and you might discover them when you enter a new system and land on a new planet/moon. Some of these alien life forms might not be dangerous and will provide you with resources, making it easier for you to gather and farm what you need for your exploration. However, not all fauna are friendly, and some of them will be hostile to you when you get too close. Hostile fauna will add challenges to your exploration and are also beneficial due to their resource drops as you navigate the different planets and moons in the game. Killing alien creatures automatically scans them.

The Starfield fauna guide lists some of the fauna that you might run into while playing, including Flocking Ankylosaurus Geophage, Flocking Glowhand Grazer, Flocking Hornface Grazer, and many others. The Starfield Wiki also provides a list of known fauna, including Apex Dust Devil Exorunner, Apex Parrothawk, Ashta, Baleen Rotifer, and many others. PCGamesN has compiled a list of all Starfield creatures, including monster and fauna, that players might encounter in the game.

If you are struggling to find the last few animals on a planet, head to the coast, as some creatures will only live in water and may be impossible to find otherwise. When scanning fauna or flora, a message saying "Biome Complete" may appear, even though the scans are not finished. This means players should travel to a different biome on the planet to find different creatures in varying habitats.