Rodents

Windscorpions, sometimes called sun spiders or solpugids. The body is as much as an inch and a half long, with a pair of heavy pinchers.  Windscorpions get the name from their speed and general resemblance to scorpions. They subdue their prey with ther pinchers, which lack poison glands. 
    Source: Insects of the Southwest

Adult carpet beetles are about an eighth of an inch long, and round in appearance. The backs of the insects have much the same color scheme as the larvae. The larvae have small, hairy, soft bodies about a quarter inch long, depending on the instar. The larvae feed on a wide variety of foods, including carpets, furs, woolens, skins, stuffed animals, leather, feathers, silk and many plant products. The adults feed on nothing except pollen and nectar from flowers outside. 
In spring and early summer, the adult will lay up to a hundred eggs, usually cemented to the product, or on furs,...

The Desert Tarantula (Aphonopelma chalcodes) 

This is our office mascot, she’s about 9 years old.
Tarantulas are harmless to humans and can be trained as pets.
For details about Tarantulas visit Desert USA.

...

Springtails are minute insects without wings in the Order Collembola. 
They occur in large numbers in moist soil and are found in homes with high humidity, organic debris, or mold. Homeowners sometimes discover these insects in large numbers in swimming pools, potted plants, or in moist soil and mulch. 
They feed on decaying, damp vegetation causing organic material
and other nutrients to return to the soil which are later used by plants. Occasionally, springtails attack young seedling and may damage
the roots and stems. 650 species in North America. Worldwide,...

Sowbugs and pillbugs are the only two crustaceans that have adapted themselves entirely to land. They actually have gills instead of a trachea (insects lungs) with which they breath.
They are also related to snails and slugs.
Sowbugs are virtually the same as pillbugs but have a wider body and cannot roll themselves into a ball. Sowbugs have two appendages that protrude from the rear of the body. They have oval bodies which have 7 overlapping plates, as well as 7 pairs of legs. Head...