(Information from "A Checklist of the Amphibians and Reptiles of Malolotja Nature Reserve", by Richard C. Boycott, 1993.)

Gekkonidae (Geckos)

   Afroedura major  Onderstall, 1984
   (Swazi Flat Gecko)
   Swaziland Red Data Status: Near Threatened
   Southern African Red Data Status: Not listed
   International Red Data Status: Near Threatened (B1a+2a) 2017 IUCN Red List
      Rocky ridges and slopes
      Cliff faces

   Lygodactylus capensis capensis (Smith, 1849)
   (Cape Dwarf Gecko)
      Riverine forest
      Valley bushveld

   Lygodactylus ocellatus ocellatus Roux, 1907
   (Spotted Dwarf Gecko)
      Rocky ridges and slopes

   Homopholis wahlbergii  (Smith, 1849)
   (Wahlberg's Velvet Gecko)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Rocky ridges and slopes
      Valley bushveld

   Pachydactylus maculatus  Gray, 1845
   (Spotted Gecko)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Open grassland
      Rocky ridges and slopes
      Valley bushveld

Varanidae (Monitor lizards)

   Varanus albigularis albigularis (Daudin, 1802)
   (Rock Monitor)
   (SiSwati: imbhulu)
      Rocky ridges and slopes

   Varanus niloticus  (Linnaeus, 1762)
   (Water Monitor)
   (SiSwati: Quamu)
      Larger rivers

Chamaeleonidae (Chameleons)

   Chamaeleo dilepis  Leach, 1819
   (Common Flap-neck Chameleon)
   (SiSwati: lunwabu)
   International Red Data Status: Least Concern 2014 IUCN Red List
      Riverine forest
      Moist indigenous forest
      Woodland
      Valley bushveld

   Bradypodion transvaalense  (FitzSimons, 1930)
   (Wolkberg Dwarf Chameleon)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Moist indigenous forest
      Alien forest

Agamidae (Agamas)

   Acanthocercus atricollis atricollis Smith, 1849
   (Southern Tree Agama)
   (SiSwati: intfulo)
      Woodland
      Valley bushveld

   Agama aculeata distanti Boulenger, 1902
   (Distant's Ground Agama)
   (SiSwati: holoholo)
      Open grassland
      Rocky ridges and slopes

Lacertidae (Lacertids)

   Nucras lalandii  (Milne-Edwards, 1829)
   (Delalande's Sandveld Lizard)
   Swaziland Red Data Status: Near Threatened
   Southern African Red Data Status: Not listed
   International Red Data Status: Least Concern 2018 IUCN Red List
      Open grassland
      Rocky ridges and slopes

Scincidae (Skinks)

   Scelotes mirus  (Roux, 1907)
   (Montane Dwarf Burrowing Skink)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Open grassland
      Rocky ridges and slopes

   Trachylepis margaritifer  (Peters, 1854)
   (Rainbow Skink)
   International Red Data Status: Least Concern 2017 IUCN Red List
      Rocky ridges and slopes
      Woodland
      Valley bushveld
      Cliff faces

   Trachylepis capensis  (Gray, 1830)
   (Cape Skink)
      Open grassland

   Trachylepis varia  (Peters, 1867)
   (Variable Skink)
      Open grassland
      Rocky ridges and slopes
      Larger rivers
      Valley bushveld

   Trachylepis striata  (Peters, 1844)
   (Eastern Striped Skink)
      Valley bushveld

   Trachylepis punctatissima  (Smith, 1849)
   (Speckled Rock Skink)
   International Red Data Status: Least Concern 2010 IUCN Red List
      Rocky ridges and slopes
      Buildings

   Afroablepharus wahlbergii  (Smith, 1849)
   (Wahlberg's Snake-eyed Skink)
      Open grassland
      Rocky ridges and slopes
      Valley bushveld

   Acontias plumbeus  Bianconi, 1849
   (Giant Legless Skink)
   International Red Data Status: Least Concern 2010 IUCN Red List
      Open grassland
      Rocky ridges and slopes

Cordylidae (Girdled and crag lizards)

   Chamaesaura aenea  Fitzinger, 1843
   (Coppery Grass Lizard)
   Swaziland Red Data Status: Near Threatened
   Southern African Red Data Status: Not listed
   International Red Data Status: Least Concern 2018 IUCN Red List
      Open grassland
      Rocky ridges and slopes

   Chamaesaura anguina anguina (Linnaeus, 1758)
   (Cape Grass Lizard)
   Swaziland Red Data Status: Near Threatened
   Southern African Red Data Status: Not listed
   International Red Data Status: Not listed
      Open grassland
      Rocky ridges and slopes
      Seepage zones

   Chamaesaura macrolepis  (Cope, 1862)
   (Large-scaled Grass Lizard)
   International Red Data Status: Least Concern 2018 IUCN Red List

   Smaug warreni barbertonensis (van Dam, 1921)
   (Barberton Girdled Lizard)
   (SiSwati: chakazane)
      Valley bushveld

   Cordylus vittifer  (Reichenow, 1887)
   (Common Girdled Lizard)
   (SiSwati: chakazane)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Rocky ridges and slopes

   Pseudocordylus melanotus melanotus FitzSimons, 1943
   (Common Crag Lizard)
   (SiSwati: chakazane)

Gerrhosauridae (Plated lizards)

   Gerrhosaurus flavigularis  Wiegmann, 1828
   (Yellow-throated Plated Lizard)
      Open grassland
      Rocky ridges and slopes
      Valley bushveld

   Broadleysaurus major  (Dumeril, 1851)
   (Rough-scaled Plated Lizard)
      Valley bushveld

Typhlopidae (Blind snakes)

   Afrotyphlops bibronii  (Smith, 1846)
   (Bibron's Blind Snake)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Open grassland
      Rocky ridges and slopes

Leptotyphlopidae (Worm snakes)

   Leptotyphlops scutifrons conjunctus (Jan, 1861)
   (Eastern Thread Snake)
   (SiSwati: umtfwana wenyoka lengaboni)
      Open grassland
      Rocky ridges and slopes
      Woodland

Boidae (Pythons and boas)

   Python natalensis  Smith, 1840
   (Southern African Python)
   (SiSwati: inhlatfu)
   Swaziland Red Data Status: Vulnerable
   Southern African Red Data Status: Vulnerable
   International Red Data Status: Not listed
      Riverine forest
      Valley bushveld

Colubridae (Typical snakes)

   Lycodonomorphus laevissimus  Raw, 1973
   (Dusky-bellied Water Snake)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Vlei systems
      Dams (man-made)

   Lycodonomorphus rufulus  (Lichtenstein, 1823)
   (Brown Water Snake)
      Vlei systems
      Swift-flowing streams
      Dams (man-made)

   Lycodonomorphus inornatus  (Dumeril and Bibron, 1854)
   (Olive House Snake)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Open grassland
      Rocky ridges and slopes
      Alien forest

   Lamprophis guttatus  (Smith, 1843)
   (Spotted House Snake)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Rocky ridges and slopes
      Cliff faces

   Boaedon fuliginosus  (Boie, 1827)
   (Brown House Snake)
   (SiSwati: umdlume)
      Rocky ridges and slopes
      Woodland
      Valley bushveld

   Inyoka swazicus  Schaefer, 1970
   (Swazi Rock Snake)
   Swaziland Red Data Status: Data Deficient
   Southern African Red Data Status: Rare
   International Red Data Status: Least Concern 2018 IUCN Red List
      Rocky ridges and slopes

   Lycophidion capense capense (Smith, 1831)
   (Cape Wolf Snake)
      Rocky ridges and slopes
      Woodland
      Valley bushveld

   Duberria lutrix lutrix (Linnaeus, 1758)
   (South African Slug-eater)
      Open grassland
      Rocky ridges and slopes
      Alien forest

   Pseudaspis cana  (Linnaeus, 1754)
   (Mole Snake)
   (SiSwati: imboma)
      Open grassland
      Rocky ridges and slopes
      Alien forest
      Valley bushveld

   Psammophylax rhombeatus rhombeatus (Linnaeus, 1754)
   (Spotted Grass Snake)
      Open grassland
      Rocky ridges and slopes

   Psammophis brevirostris  Peters, 1881
   (Short-snouted Grass Snake)
      Open grassland
      Rocky ridges and slopes
      Woodland
      Valley bushveld

   Psammophis mossambicus  (Hallowell, 1844)
   (Olive grass snake)
      Open grassland
      Rocky ridges and slopes
      Woodland
      Valley bushveld

   Psammophis crucifer  (Daudin, 1803)
   (Cross-marked Grass Snake)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Open grassland
      Rocky ridges and slopes

   Philothamnus hoplogaster  (Gunther, 1863)
   (South Eastern Green Snake)
      Dams (man-made)

   Philothamnus natalensis occidentalis Broadley, 1966
   (Western Natal Green Snake)
      Dams (man-made)
      Larger rivers

   Philothamnus semivariegatus  (Smith, 1840)
   (Spotted Bush Snake)
      Rocky ridges and slopes
      Woodland
      Valley bushveld

   Crotaphopeltis hotamboeia  (Laurenti, 1768)
   (Red-lipped Snake)
      Open grassland
      Rocky ridges and slopes
      Valley bushveld

   Dispholidus typus typus (Smith, 1829)
   (Boomslang)
   (SiSwati: indlondlo)
      Open grassland
      Riverine forest
      Alien forest
      Valley bushveld

   Thelotornis capensis capensis Smith, 1849
   (Southern Twig Snake)
   (SiSwati: lununkhu)
      Rocky ridges and slopes
      Woodland
      Valley bushveld

   Dasypeltis scabra  (Linnaeus, 1758)
   (Rhombic Egg-eater)
   International Red Data Status: Least Concern 2010 IUCN Red List
      Open grassland
      Rocky ridges and slopes
      Valley bushveld

Atractaspididae (Burrowing snakes)

   Aparallactus capensis  (Smith, 1849)
   (Black-headed Centipede-eater)
   International Red Data Status: Least Concern 2011 IUCN Red List
      Open grassland
      Rocky ridges and slopes

   Homoroselaps lacteus  (Linnaeus, 1754)
   (Spotted Harlequin Snake)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Open grassland
      Rocky ridges and slopes

   Atractaspis bibronii  Smith, 1849
   (Bibron's Stiletto Snake)
      Open grassland
      Rocky ridges and slopes

Elapidae (Cobras and mambas)

   Hemachatus haemachatus  (Lacepede, 1788)
   (Rinkhals)
   (SiSwati: phemphetwane)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Open grassland
      Rocky ridges and slopes

   Naja mossambica  Peters, 1854
   (Mozambique Spitting Cobra)
   (SiSwati: imfeti)
      Riverine forest
      Woodland
      Valley bushveld

   Dendroaspis polylepis  Gunther, 1864
   (Black Mamba)
   (SiSwati: imamba)
   International Red Data Status: Least Concern 2010 IUCN Red List
      Valley bushveld

Viperidae (Adders)

   Causus rhombeatus  (Lichtenstein, 1823)
   (Common or Rhombic Night Adder)
      Open grassland
      Rocky ridges and slopes
      Valley bushveld

   Bitis atropos  (Linnaeus, 1754)
   (Berg Adder)
   International Red Data Status: Least Concern 2018 IUCN Red List
      Rocky ridges and slopes

   Bitis arietans arietans (Merrem, 1820)
   (Puff Adder)
   (SiSwati: libululu)
      Open grassland
      Rocky ridges and slopes
      Valley bushveld

Pelomedusidae (Terrapins)

   Pelusios sinuatus  (Smith, 1838)
   (Serrated Hinged Terrapin)
   (SiSwati: lufudvu lwemanti)
   Southern African Red Data Status: Least Concern