Mammals

These mammals are commonly observed in the Preserve.

Common Name	Scientific Name	Comments
Shrews	Soricidae
Gray Shrew	Notiosorex crawfordi	The only shrew in our desert area.
Bats	Chiroptera
Leaf-nose bat	Macrotus californicus	(The bats listed may be expected here although specific sightings of most have not been verified.)
Fringed Myotis	Myotis thysanodes
Long-eared Myotis	Myotis evotis
California Myotis	Myotis californicus
Yuma Myotis	Myotis yumanensis
Long-legged Myotis	Myotis volans
Small-footed Myotis	Myotis subulatus
Western Pipistrel	Pipistrellus hesperus
Red Bat	Lasiurus borealis
Hoary Bat	Lasiurus cinereus
Western Yellow Bat	Lasiurus ega
Big Brown Bat	Eptesicus fucus
Spotted Bat	Euderma maculata
Western Big-eared Bat	Plecotus townsendi
Western Mastiff Bat	Eumops perotis
Pallid Bat	Antrozous pallidus
Pocketed Freetail Bat	Tadarida femorosacca
Big Freetail Bat	Tadarida molossa
Mexican Freetail Bat	Tadarida brasiliensis
Bears	Ursidae
Black Bear	Ursa americanus	Uncommon but may be expected to enter the Preserve area during droughts.
Raccoons	Procyonidae
Raccoon	Procyon lotor	A Common nocturnal animal.
Ringtails	Bassariscidae
Ringtail Cat	Bassariscus astutus	A very rare nocturnal animal.
Badgers, Skunks	Mustelidae
Badger	Taxidea taxus	No confirmed sightings.
Spotted Skunk	Spilogale putorius	No confirmed sightings.
Striped Skunk	Mephitis mephitis	Uncommon.
Dogs	Canidae
Coyote	Canus latrans	Common.
Kit Fox	Vulpes macrotis	Uncommon, but may be expected.
Gray Fox	Urocyon cinereoargenteus	Uncommon.
Cats	Felidae
Mountain Lion	Felis concolor	Rare, but sightings are reported each year.
Bobcat	Lynx rufus	Occasionally encountered resident.
Squirrels	Sciuridae
California Ground Squirrel	Spermophilus beecheyi	Common prey animal.
Roundtail Ground Squirrel	Spermophilus tereticaulis	Not observed, but may be within the Preserve area.
Whitetail Antelope Ground Squirrel	Ammospermophilus leucurus	Occasional.
Pocket Mice, Kangaroo Rats	Heteromyidae
Desert Pocket Mouse	Perognathus penicillatus	Probably common.
Spiny Pocket Mouse	Perognathus spinatus	No specific information.
Desert Kangaroo Rat	Dipodomys deserti	Common; several nest sites known.
Merriam Kangaroo Rat	Dipodymus merriami	Unknown, but may be present.
Mice, Rats, Voles	Cricetidae
Western Harvest Mouse	Reithrodontomys megalotis	Probably common.
Cactus Mouse	Peromyscus eremicus	Common.
Deer Mouse	Peromyscus maniculatus	Probably common.
Piñon Mouse	Peromyscus truei	May be present at higher elevations.
Southern Grasshopper Mouse	Onychomys torridus	No information.
Desert Woodrat	Neotoma lepida	Several sightings and captures.
California Vole	Microtus californicus	Skeletons often found in owl pellets.
House Mouse	Mus musculus	Ubiquitous.
Pocket Gopher	Thomomys bottae	Probably common.
Hares, Rabbits	Leporidae
Blacktail Jackrabbit	Lepus californicus	Seen occasionally.
Desert Cottontail	Sylvilagus audoboni	Common.
Deer	Cervidae
Mule Deer	Odocoileus hemionis	Seen occasionally.
Sheep	Bovidae
Bighorn Sheep	Ovis canadensis	Seen occasionally, mostly in the middle of the Canyon Trail.