2 Answers

There are numerous possibilities since the invertebrate soil fauna includes nematodes (roundworms), arthropods (mites, centipedes, springtails, insects), annelids (earthworm ), and molluscs (snails, slugs).

Insects can include ants, beetles & their larvae, or termites.

Vertebrates that shape soil include gophers, prairie dogs, skunks, rabbits, pack rats, wood rats, voles, fieldmice, wild pigs like the javelinas, lizards and other reptiles, plus ground nesting birds that dig and scratch the upper layers in search of food or nesting sites.

Many animals make extensive underground dens like kit foxes or rabbits. Shovel-nosed snakes spend most of their time in sandy, loose soil.http://www.reptilesofaz.org/Snakes-Subpa…

A worm