Racer
Coluber constrictor Linnaeus, 1758
Status not recordedsnakes
The racer (Coluber constrictor) is a species in the family Colubridae, order Squamata. Recorded adults weigh about 1.59 kg and live up to 10.2 years.
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Quick facts about the racer
- Weight
- 1.59 kgsrc for Weight
- Length
- up to 1.91 msrc for Length
- Lifespan
- 10.2 yearssrc for Lifespan
- Diet
- Carnivoresrc for Diet
- Longest recorded lifespan
- 10.3 years
- Main food
- Not recorded
- Habitat
- grassland, shrublandsrc for Habitat
- Egg incubation
- 50.5 dayssrc for Egg incubation
- Young per litter or clutch
- 12 – 13.6src for Young per litter or clutch
- Age at maturity
- 13.5 months – 3 yearssrc for Age at maturity
- Litters or clutches a year
- 1src for Litters or clutches a year
- Reproduction
- Eggssrc for Reproduction
- Active
- By day (diurnal)src for Active
- Lifestyle
- Terrestrialsrc for Lifestyle
- Brain mass
- 271 mg – 303 mg (0.0717% of body mass)src for Brain mass
- Conservation status
- Not recorded
- Countries on record
- Not recorded
Which animals does the racer eat?
Species recorded in published studies and collections.
Recorded prey of the racer
15 on record
- Ring-necked snake Diadophis punctatus5 sources
- Garden snake Thamnophis sirtalis22 sources
- Southern leopard frog Lithobates sphenocephalus18 sources
- Greensnake Opheodrys aestivus8 sources
- Green anole Anolis carolinensis6 sources
- Six-lined racerunner Aspidoscelis sexlineatus5 sources
- Common wormsnake Carphophis amoenus5 sources
- Plains garter snake Thamnophis radix5 sources
- Fence lizard Sceloporus undulatus4 sources
- Brown wax Nerodia fasciata4 sources
- Hispid cotton rat Sigmodon hispidus4 sources
- Common watersnake Nerodia sipedon3 sources
Show 3 more
- Southern five-lined skink Plestiodon inexpectatus3 sources
- Sagebrush lizard Sceloporus graciosus3 sources
- Blue belly Sceloporus occidentalis3 sources
Each pair is recorded by at least two independent datasets. A record shows the animal was seen or found to have eaten the other, including scavenged carcasses and young animals; it does not say how often. Compiled by Global Biotic Interactions (CC0 1.0).
References for these records
- COLUBER CONSTRICTOR (North American Racer). PREY SIZE. 2011. Herpetological Review 42(2): 285-285
- https://www.inaturalist.org/observations/7201491
- https://www.inaturalist.org/observations/232096398
- https://www.inaturalist.org/observations/16770981
- https://www.inaturalist.org/observations/79711714
- https://www.inaturalist.org/observations/164198310
- https://www.inaturalist.org/observations/310537136
- https://www.inaturalist.org/observations/7499943
- https://www.inaturalist.org/observations/125480829
- https://www.inaturalist.org/observations/2973492
- https://www.inaturalist.org/observations/3406468
- https://www.inaturalist.org/observations/360070048
Where does the racer live?
Not recorded
Is the racer endangered?
No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.
How is the racer classified?
- kingdomAnimalia
- phylumChordata
- classReptilia
- orderSquamata
- familyColubridae
- genusColuber
- SpeciesColuber constrictor Linnaeus, 1758
Synonyms Bascanion constrictor, Bascanion vetustus, Bascanium anthicum, Coluber flaviventris, Coluber mormon, Coluber ortenburgeri, Coryphodon oaxaca, Scoliophis atlanticus, Zamenis conirostris, Zamenis constrictor, Zamenis stejnegerianus
Other names and names in other languages (40)
- Black racerEnglish
- Eastern black racerEnglish
- Eastern racerEnglish
- North American racerEnglish
- Yellow-bellied racerEnglish
- راسرة شرقيةArabic
- ᎤᎦᏑᎯCherokee
- štíhlovka americkáCzech
- Nordamerikansk PilsnogDanish
- SchwarznatterGerman
- CorredoraSpanish
- Culebra chirrionera constrictoraSpanish
- culebra corredora constrictorSpanish
- Culebra-corredora constrictorSpanish
- couleuvre agileFrench
- Colubro neroItalian
- HardloperDutch
- GeelbuikslangDutch
- Corredora-azulPortuguese
- Cobra-corredoraPortuguese
- Чёрный полозRussian
- črni dirkačSlovenian
- Полоз чорнийUkrainian
- Tan Racerroot
- Blackmask Racerroot
- Blue Racerroot
- Brownchin Racerroot
- Buttermilk Racerroot
- Everglades Racerroot
- Florida Racerroot
- Mexican Racerroot
- Northern Black Racerroot
- or Midland Racerroot
- Plains Racerroot
- Prairie Racerroot
- Southern Black Racerroot
- Western Racerroot
- Western yellow-bellied Racerroot
- Yellowbelly Racerroot
- 黑遊蛇Chinese
Relatives of the racer
Other species in the same genus Coluber.
CompareRacer vs Sonoran whipsnakeRacer vs Coluber argesRacer vs Coluber caerulescensRacer vs Coluber cinereus
Common questions
Answered only where our data holds the answer.
How big is the racer?
An adult racer weighs 1.59 kg, according to values recorded on Wikidata.
How long does the racer live?
The racer has a recorded lifespan of 10.2 years.
What kind of animal is the racer?
The racer (Coluber constrictor) belongs to the family Colubridae in the order Squamata.
Which animals does the racer eat?
Animals recorded as prey of the racer include ring-necked snake, garden snake, southern leopard frog and greensnake. The records are compiled by Global Biotic Interactions from published studies; each pair is reported by at least two datasets.
Sources and how to cite this page
Data as of 2026-11-14. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · CC0 1.0 · E096-269
Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1 - AnimalTraits: a curated animal trait database for body mass, metabolic rate and brain size · CC0 1.0 · 1.0.7
Herberstein, M.E., McLean, D.J., Lowe, E. et al. (2022) AnimalTraits: a curated animal trait database for body mass, metabolic rate and brain size. Scientific Data 9: 265. https://doi.org/10.1038/s41597-022-01364-9. Data: https://doi.org/10.5281/zenodo.6468938 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - Global Biotic Interactions (GloBI): interpreted data products · CC0 1.0 · 0.11
Poelen, J.H., Simons, J.D. & Mungall, C.J. (2014) Global Biotic Interactions: an open infrastructure to share and analyze species-interaction datasets. Ecological Informatics 24: 148–159. https://doi.org/10.1016/j.ecoinf.2014.08.005. Data: https://doi.org/10.5281/zenodo.22691479, with each record's original reference. - ReptTraits: a comprehensive dataset of ecological traits in reptiles · CC BY 4.0 · v1-2
Oskyrko, O., Mi, C., Meiri, S. et al. (2024) ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data 11: 243. https://doi.org/10.1038/s41597-024-03079-5. Data: https://doi.org/10.6084/m9.figshare.24572683.v4 - SquamBase 1.0 - a dataset of squamate species traits · CC0 1.0 · 1.0-dryad-v5
Meiri, S. (2024) SquamBase - a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography 33(4): e13812. https://doi.org/10.1111/geb.13812. Data: https://doi.org/10.5061/dryad.76hdr7t3b
Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Racer (Coluber constrictor). Retrieved from https://creaturedata.com/animals/coluber-constrictor
“Racer (Coluber constrictor).” CreatureData, 2026, https://creaturedata.com/animals/coluber-constrictor.
@misc{coluber_constrictor_2026,
title = {Racer (Coluber constrictor)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/coluber-constrictor},
note = {Data as of 2026-11-14}
}