Non-venomous
Flat Headed Snake

The smooth, delicate, and small flat-headed or flathead snake with a few defenses disrupts the notion of snakes being dangerous, powerful, and fearsome. The specific name, gracilis, means slender and graceful. The fossorial snake is usually active from April through October.

Scientific Classifications

  • Suborder:Serpentes
  • Family:Colubridae
  • Genus:Tantilla
  • Species:T. gracilis

Conservation Status

Not EvaluatedNE

Not Evaluated

Data DeficientDD

Data Deficient

Least ConcernLC

Least Concern

Near ThreatenedNT

Near Threatened

VulnerableVU

Vulnerable

EndangeredEN

Endangered

Critically EndangeredCR

Critically Endangered

Extinct in the wildEW

Extinct in the wild

ExtinctEX

Extinct

Description

Flathead Snake

Size

The adults grow to a length of 7-8 in (18-20 cm).

Color and Appearance

Flat Headed Snake Picture

The body color is generally gray-brown, tan, or slightly reddish brown. The flat head is sometimes darker than the body or black. The belly is salmon pink.

Its smooth dorsal scales are arranged in rows of 15 at the midbody. There are six supralabials, minute eyes, and a divided anal plate in its body.  

Are They Dangerous to Humans 

When captured, the secretive, harmless snake is not known to bite. It only tries to shove its head into the folds of the captor’s hand in an attempt to escape.

Flat-Headed Snakes at a Glance

Distribution

Its range extends from the lower Rio Grande Valley northwards to Missouri and Kansas in the US.

Habitat

It prefers rocky, south-facing, wooded hillsides, especially those having sandy soils with limestone rocks. But it can be commonly found in piles of rocks and leaves in gardens, urban areas, and various habitats with high moisture content.

Tantilla gracilis

The colubrid spends most of its time in underground burrows and slightly moist soil under rocks.

Lifespan

The flat-headed snake lives for around 5 years.

Predators

It is preyed upon by birds, lizards, small mammals, and other snakes.

Diet

It eats a variety of insects, their larvae, and centipedes.

Baby Flat Headed Snake

Reproduction

Oviparous (lays eggs that hatch outside the body)

Courtship and mating take place in late April and May. June sees the females laying clutches of 1-4 eggs each in moist soil under rocks. They hatch in August and September. The hatchlings are around 3 inches long.

Source

phenology.mwparc.org, illinois.gov, flickr.com, inaturalist.ca, discoverlife.org

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