Mammals:
* Rabbits: Known for their timidity, rabbits live in burrows called "warrens."
* Mice and Rats: These rodents are often considered shy, especially when exposed.
* Voles: These small, mouse-like rodents live in burrows underground.
* Ground Squirrels: These creatures can be quite active, but they readily retreat to their burrows when feeling threatened.
* Badgers: While badgers are more assertive than some on this list, they are still considered shy and primarily live in burrows.
* Pocket Gophers: These shy, burrowing rodents are primarily found in North America.
* Shrews: Small, mouse-like mammals, shrews are generally shy and live in burrows.
* Mole: These shy creatures spend their lives underground, digging elaborate tunnel systems.
* Prairie Dogs: Though they are social, prairie dogs are easily startled and quickly retreat to their burrows.
Birds:
* Burrowing Owls: These unique owls make their homes in burrows dug by other animals.
* Puffins: These seabirds have a unique habit of nesting in burrows on cliffs.
Reptiles:
* Snakes: Some snake species, like garter snakes, make use of existing burrows for shelter.
* Lizards: Some lizard species, like the desert iguana, dig burrows for protection.
Amphibians:
* Toads: While not as common as mammals, some toad species will burrow in loose soil.
Insects:
* Ants: These social insects create elaborate underground nests.
* Bees: While some bees live in hives, others dig underground burrows.
* Beetles: Several species of beetles create burrows for shelter.
This is not an exhaustive list, but it provides a good starting point for understanding which animals consider burrows their home. Remember, shyness is subjective, and many animals are more cautious and wary of humans than truly "shy."