- Class: Amphibia Gray, 1825 - Amphibians
- Order: Caudata Scopoli, 1777 - Salamanders
- Family: Sirenidae Gray, 1825 - Sirens
- Siren Österdam, 1766 - Sirens
- Siren intermedia Barnes, 1826 - Western Lesser Siren
- Siren Österdam, 1766 - Sirens
- Family: Cryptobranchidae Fitzinger, 1825 - Giant Salamanders
- Cryptobranchus Leuckart, 1821 - Hellbenders
- Cryptobranchus alleganiensis (Daudin, 1803) - Hellbender
- Cryptobranchus Leuckart, 1821 - Hellbenders
- Family: Ambystomatidae Gray, 1850 - Mole Salamanders
- Ambystoma Tschudi, 1838 - Mole Salamanders
- Ambystoma annulatum Cope, 1886 - Ringed Salamander
- Ambystoma maculatum (Shaw, 1802) - Spotted Salamander
- Ambystoma opacum (Gravenhorst, 1807) - Marbled Salamander
- Ambystoma talpoideum (Holbrook, 1838) - Mole Salamander
- Ambystoma texanum (Matthes, 1855) - Small-mouthed Salamander
- Ambystoma tigrinum (Green, 1825) - Eastern Tiger Salamander
- Ambystoma Tschudi, 1838 - Mole Salamanders
- Family: Salamandridae Goldfuss, 1820 - Newts
- Notophthalmus Rafinesque, 1820 - Eastern Newts
- Notophthalmus viridescens (Rafinesque, 1820) - Central Newt
- Notophthalmus Rafinesque, 1820 - Eastern Newts
- Family: Proteidae Gray, 1825 - Mudpuppies and Waterdogs
- Necturus Rafinesque, 1819 - Waterdogs and Mudpuppies
- Necturus maculosus (Rafinesque, 1818) - Mudpuppy
- Necturus Rafinesque, 1819 - Waterdogs and Mudpuppies
- Family: Amphiumidae Gray, 1825 - Amphiumas
- Amphiuma Garden, 1821 - Amphiumas
- Amphiuma tridactylum Cuvier, 1827 - Three-toed Amphiuma
- Amphiuma Garden, 1821 - Amphiumas
- Family: Plethodontidae Gray, 1850 - Lungless Salamanders
- Eurycea Rafinesque, 1822 - Brook Salamanders
- Eurycea longicauda (Green, 1818) - Long-tailed Salamander
- Eurycea lucifuga Rafinesque, 1822 - Cave Salamander
- Eurycea spelaea Stejneger, 1892 - Grotto Salamander
- Eurycea tynerensis Moore and Hughes, 1939 - Oklahoma Salamander
- Hemidactylium Tschudi, 1838 - Four-Toed Salamanders
- Hemidactylium scutatum (Temminck and Schlegel in Von Siebold, 1838) - Four-toed Salamander
- Plethodon Tschudi, 1838 - Woodland Salamanders
- Plethodon albagula Grobman, 1944 - Western Slimy Salamander
- Plethodon angusticlavius Grobman, 1944 - Ozark Zigzag Salamander
- Plethodon serratus Grobman, 1944 - Southern Red-backed Salamander
- Eurycea Rafinesque, 1822 - Brook Salamanders
- Family: Sirenidae Gray, 1825 - Sirens
- Order: Anura Fischer von Waldheim, 1813 - Frogs
- Family: Scaphiopodidae Cope, 1865 - North American Spadefoots
- Scaphiopus Holbrook, 1836 - North American Spadefoots
- Scaphiopus holbrookii (Harlan, 1835) - Eastern Spadefoot
- Spea Cope, 1866 - Western Spadefoots
- Spea bombifrons (Cope, 1863) - Plains Spadefoot
- Scaphiopus Holbrook, 1836 - North American Spadefoots
- Family: Bufonidae Gray, 1825 - True Toads
- Anaxyrus Tschudi, 1845 - North American Toads
- Anaxyrus americanus (Holbrook, 1836) - American Toad
- Anaxyrus cognatus (Say, 1822) - Great Plains Toad
- Anaxyrus fowleri (Hinckley, 1882) - Fowler's Toad
- Anaxyrus woodhousii (Girard, 1854) - Woodhouse's Toad
- Anaxyrus Tschudi, 1845 - North American Toads
- Family: Hylidae Rafinesque, 1815 - Treefrogs
- Acris Duméril and Bibron, 1841 - Cricket Frogs
- Acris blanchardi Harper, 1947 - Blanchard's Cricket Frog
- Hyla Laurenti, 1768 - Holarctic Treefrogs
- Hyla chrysoscelis Cope, 1880 - Cope's Gray Treefrog
- Hyla cinerea (Schneider, 1799) - Green Treefrog
- Hyla versicolor LeConte, 1825 - Gray Treefrog
- Pseudacris Fitzinger, 1843 - Chorus Frogs
- Pseudacris crucifer (Wied-Neuwied, 1838) - Spring Peeper
- Pseudacris feriarum (Baird, 1854) - Upland Chorus Frog
- Pseudacris fouquettei Lemmon, Lemmon, Collins, and Cannatella, 2008 - Cajun Chorus Frog
- Pseudacris illinoensis Smith, 1951 - Illinois Chorus Frog
- Pseudacris maculata (Agassiz, 1850) - Boreal Chorus Frog
- Acris Duméril and Bibron, 1841 - Cricket Frogs
- Family: Ranidae Rafinesque, 1814 - True Frogs
- Lithobates Fitzinger, 1843 - American Water Frogs
- Lithobates areolatus (Baird and Girard, 1852) - Northern Crawfish Frog
- Lithobates blairi (Mecham, Littlejohn, Oldham, Brown, and Brown, 1973) - Plains Leopard Frog
- Lithobates catesbeianus (Shaw, 1802) - American Bullfrog
- Lithobates clamitans (Latreille, 1801) - Green Frog
- Lithobates palustris (LeConte, 1825) - Pickerel Frog
- Lithobates pipiens (Schreber, 1782) - Northern Leopard Frog
- Lithobates sphenocephalus (Cope, 1886) - Southern Leopard Frog
- Lithobates sylvaticus (LeConte, 1825) - Wood Frog
- Lithobates Fitzinger, 1843 - American Water Frogs
- Family: Microhylidae Gunther, 1843 - Microhylid Frogs and Toads
- Gastrophryne Fitzinger, 1843 - North American Narrow-mouthed Toads
- Gastrophryne carolinensis (Holbrook, 1835) - Eastern Narrow-mouthed Toad
- Gastrophryne olivacea (Hallowell, 1856) - Western Narrow-mouthed Toad
- Gastrophryne Fitzinger, 1843 - North American Narrow-mouthed Toads
- Family: Scaphiopodidae Cope, 1865 - North American Spadefoots
- Order: Caudata Scopoli, 1777 - Salamanders
- Class: Reptilia Laurenti, 1768 - Reptiles
- Order: Squamata Oppel, 1811 - Lizards and Snakes
- Suborder: Lacertilia Oppel, 1811 - Lizards
- Family: Iguanidae Oppel, 1811 - Iguanid Lizards
- Crotaphytus Holbrook, 1842 - Collared Lizards
- Crotaphytus collaris (Say, 1823) - Eastern Collared Lizard
- Phrynosoma Wiegmann, 1828 - Horned Lizards
- Phrynosoma cornutum (Harlan, 1825) - Texas Horned Lizard
- Sceloporus Wiegmann, 1828 - Spiny Lizards
- Sceloporus consobrinus Baird and Girard, 1853 - Prairie Lizard
- Crotaphytus Holbrook, 1842 - Collared Lizards
- Family: Teiidae Gray, 1827 - Whiptails and Racerunners
- Aspidoscelis Fitzinger, 1843 - Whiptails
- Aspidoscelis sexlineata (Linnaeus, 1766) - Six-lined Racerunner
- Aspidoscelis Fitzinger, 1843 - Whiptails
- Family: Scincidae Gray, 1825 - Skinks
- Plestiodon Duméril and Bibron, 1839 - Toothy Skinks
- Plestiodon anthracinus (Baird, 1850) - Southern Coal Skink
- Plestiodon fasciatus (Linnaeus, 1758) - Common Five-lined Skink
- Plestiodon laticeps (Schneider, 1801) - Broad-headed Skink
- Plestiodon obsoletus Baird and Girard, 1852 - Great Plains Skink
- Plestiodon septentrionalis Baird, 1859 - Prairie Skink
- Scincella Mittleman, 1950 - Ground Skinks
- Scincella lateralis (Say in James, 1823) - Little Brown Skink
- Plestiodon Duméril and Bibron, 1839 - Toothy Skinks
- Family: Anguidae Gray, 1825 - Glass Lizards and Alligator Lizards
- Ophisaurus Daudin, 1803 - Glass Lizards
- Ophisaurus attenuatus Cope, 1880 - Western Slender Glass Lizard
- Ophisaurus Daudin, 1803 - Glass Lizards
- Family: Gekkonidae Gray, 1825 - Geckos
- Hemidactylus Gray, 1825 - House Geckos
- Hemidactylus turcicus (Linnaeus, 1758) - Mediterranean Gecko 1
- Hemidactylus Gray, 1825 - House Geckos
- Family: Lacertidae Bonaparte, 1831 - Old World Runners
- Podarcis Wagler, 1830 - Wall Lizards
- Podarcis siculus (Rafinesque, 1810) - Italian Wall Lizard 1
- Podarcis Wagler, 1830 - Wall Lizards
- Family: Iguanidae Oppel, 1811 - Iguanid Lizards
- Suborder: Serpentes Linnaeus, 1758 - Snakes
- Family: Colubridae Oppel, 1811 - Typical Harmless Snakes
- Carphophis Gervais, 1843 - North American Wormsnakes
- Carphophis vermis (Kennicott, 1859) - Western Wormsnake
- Cemophora Cope, 1860 - Scarletsnakes
- Cemophora coccinea (Blumenbach, 1788) - Northern Scarletsnake
- Clonophis Cope, 1889 - Kirtland's Snakes
- Clonophis kirtlandii (Kennicott, 1856) - Kirtland's Snake
- Coluber Linnaeus, 1758 - North American Racers, Coachwhips, and Whipsnakes
- Coluber constrictor Linnaeus, 1758 - North American Racer
- Coluber flagellum Shaw, 1802 - Eastern Coachwhip
- Diadophis Baird and Girard, 1853 - Ring-necked Snakes
- Diadophis punctatus (Linnaeus, 1766) - Ring-necked Snake
- Farancia Gray, 1842 - Mudsnakes and Rainbow Snakes
- Farancia abacura (Holbrook, 1836) - Western Mudsnake
- Haldea Baird and Girard, 1853 - Rough Earthsnakes
- Haldea striatula (Linnaeus, 1766) - Rough Earthsnake
- Heterodon Latreille, 1801 - North American Hog-nosed Snakes
- Heterodon gloydi Edgren, 1952 - Dusty Hog-nosed Snake
- Heterodon nasicus Baird and Girard, 1852 - Plains Hog-nosed Snake
- Heterodon platirhinos Latreille, 1801 - Eastern Hog-nosed Snake
- Lampropeltis Fitzinger, 1843 - Kingsnakes and Milksnakes
- Lampropeltis calligaster (Harlan, 1827) - Prairie Kingsnake
- Lampropeltis holbrooki Stejneger, 1903 - Speckled Kingsnake
- Lampropeltis nigra (Yarrow, 1882) - Eastern Black Kingsnake
- Lampropeltis triangulum (Lacépède, 1789) - Eastern Milksnake
- Nerodia Baird and Girard, 1853 - North American Watersnakes
- Nerodia cyclopion (Duméril, Bibron, and Duméril, 1854) - Mississippi Green Watersnake
- Nerodia erythrogaster (Forster, 1771) - Plain-bellied Watersnake
- Nerodia fasciata (Linnaeus, 1766) - Broad-banded Watersnake
- Nerodia rhombifer (Hallowell, 1852) - Diamond-backed Watersnake
- Nerodia sipedon (Linnaeus, 1758) - Common Watersnake
- Opheodrys Fitzinger, 1843 - Greensnakes
- Opheodrys aestivus (Linnaeus, 1766) - Northern Rough Greensnake
- Opheodrys vernalis (Harlan, 1827) - Smooth Greensnake
- Pantherophis Fitzinger, 1843 - North American Ratsnakes
- Pantherophis emoryi (Baird and Girard, 1853) - Great Plains Ratsnake
- Pantherophis obsoletus (Say, 1823) - Western Ratsnake
- Pantherophis ramspotti Crother, White, Savage, Eckstut, Graham, and Gardner, 2011 - Western Foxsnake
- Pantherophis vulpinus (Baird and Girard, 1853) - Eastern Foxsnake
- Pituophis Holbrook, 1842 - Bullsnakes, Pinesnakes, and Gopher Snakes
- Pituophis catenifer (Blainville, 1835) - Bullsnake
- Regina Baird and Girard, 1853 - Crawfish Snakes
- Regina grahamii Baird and Girard, 1853 - Graham's Crawfish Snake
- Sonora Baird and Girard, 1853 - North American Groundsnakes
- Sonora semiannulata Baird and Girard, 1853 - Variable Groundsnake
- Storeria Baird and Girard, 1853 - North American Brownsnakes
- Storeria dekayi (Holbrook, 1836) - DeKay's Brownsnake
- Storeria occipitomaculata (Storer, 1839) - Northern Red-bellied Snake
- Tantilla Baird and Girard, 1853 - Black-headed, Crowned, and Flat-headed Snakes
- Tantilla gracilis Baird and Girard, 1853 - Flat-headed Snake
- Thamnophis Fitzinger, 1843 - North American Gartersnakes
- Thamnophis proximus (Say, 1823) - Orange-striped Ribbonsnake
- Thamnophis radix (Baird and Girard, 1853) - Plains Gartersnake
- Thamnophis sirtalis (Linnaeus, 1758) - Common Gartersnake
- Tropidoclonion Cope, 1860 - Lined Snakes
- Tropidoclonion lineatum (Hallowell, 1856) - Lined Snake
- Virginia Baird and Girard, 1853 - North American Earthsnakes
- Virginia valeriae Baird and Girard, 1853 - Western Smooth Earthsnake
- Carphophis Gervais, 1843 - North American Wormsnakes
- Family: Viperidae Bonaparte, 1840 - Asps and Vipers
- Agkistrodon Palisot de Beauvois, 1799 - American Moccasins
- Agkistrodon contortrix (Linnaeus, 1766) - Copperhead
- Agkistrodon piscivorus (Lacépède, 1789) - Western Cottonmouth
- Crotalus Linnaeus, 1758 - Rattlesnakes
- Crotalus horridus Linnaeus, 1758 - Timber Rattlesnake
- Sistrurus Garman, 1883 - Massasaugas and Pygmy Rattlesnakes
- Sistrurus catenatus (Rafinesque, 1818) - Eastern Massasauga
- Sistrurus miliarius (Linnaeus, 1766) - Western Pygmy Rattlesnake
- Sistrurus tergeminus (Say, 1823) - Prairie Massasauga
- Agkistrodon Palisot de Beauvois, 1799 - American Moccasins
- Family: Colubridae Oppel, 1811 - Typical Harmless Snakes
- Suborder: Lacertilia Oppel, 1811 - Lizards
- Order: Testudines Linnaeus, 1758 - Turtles
- Family: Chelydridae Gray, 1870 - Snapping Turtles
- Chelydra Schweigger, 1812 - Snapping Turtles
- Chelydra serpentina (Linnaeus, 1758) - Snapping Turtle
- Macrochelys Gray, 1855 - Alligator Snapping Turtles
- Macrochelys temminckii (Harlan, 1835) - Alligator Snapping Turtle
- Chelydra Schweigger, 1812 - Snapping Turtles
- Family: Kinosternidae Agassiz, 1857 - Mud and Musk Turtles
- Kinosternon Spix, 1824 - American Mud Turtles
- Kinosternon flavescens (Agassiz, 1857) - Yellow Mud Turtle
- Kinosternon subrubrum (Lacépède, 1788) - Mississippi Mud Turtle
- Sternotherus Gray, 1825 - Musk Turtles
- Sternotherus odoratus (Latreille in Sonnini and Latreille, 1801) - Eastern Musk Turtle
- Kinosternon Spix, 1824 - American Mud Turtles
- Family: Emydidae Gray, 1825 - Box and Basking Turtles
- Chrysemys Gray, 1844 - Painted Turtles
- Chrysemys dorsalis Agassiz, 1857 - Southern Painted Turtle
- Chrysemys picta (Schneider, 1783) - Western Painted Turtle
- Deirochelys Agassiz, 1857 - Chicken Turtles
- Deirochelys reticularia (Latreille in Sonnini and Latreille, 1801) - Western Chicken Turtle
- Emydoidea Gray, 1870 - Blanding's Turtles
- Emydoidea blandingii (Holbrook, 1838) - Blanding's Turtle
- Graptemys Agassiz, 1857 - Map Turtles
- Graptemys geographica (LeSueur, 1817) - Northern Map Turtle
- Graptemys ouachitensis Cagle, 1953 - Ouachita Map Turtle
- Graptemys pseudogeographica (Gray, 1831) - False Map Turtle
- Pseudemys Gray, 1856 - Cooters
- Pseudemys concinna (LeConte, 1830) - River Cooter
- Terrapene Merrem, 1820 - American Box Turtles
- Terrapene carolina (Linnaeus, 1758) - Three-toed Box Turtle
- Terrapene ornata (Agassiz, 1857) - Ornate Box Turtle
- Trachemys Agassiz, 1857 - Sliders
- Trachemys scripta (Schoepff, 1792) - Red-eared Slider
- Chrysemys Gray, 1844 - Painted Turtles
- Family: Trionychidae Bell, 1828 - Softshells
- Apalone Rafinesque, 1832 - North American Softshells
- Apalone mutica (LeSueur, 1827) - Midland Smooth Softshell
- Apalone spinifera (LeSueur, 1827) - Eastern Spiny Softshell
- Apalone Rafinesque, 1832 - North American Softshells
- Family: Chelydridae Gray, 1870 - Snapping Turtles
- Order: Squamata Oppel, 1811 - Lizards and Snakes
Notes
1 This species is not native to Missouri. Thus far, non-native reptiles in Missouri have only been found in urban areas and do not appear to constitute a threat to our native herpetofauna. This is not the case everywhere and non-native species that become invasive are considered by many biologists to be a major threat, second only to habitat loss, to our native species. Care should be taken to prevent the spread of this and all non-native species. Furthermore, it is illegal to release non-native species into the environment.