The gray ratsnake or gray rat snake (''Pantherophis spiloides''), also commonly known as the central ratsnake, chicken snake, midland ratsnake, or pilot black snake, is a species of nonvenomous snake in the genus ''

Pantherophis ''Pantherophis'' is a genus of nonvenomous colubrid snakes endemic to central and eastern regions of North America. It consists of the North American ratsnakes, the foxsnakes, and the cornsnakes. The genus, which contains 10 recognized specie ...

'' in the subfamily Colubrinae. The gray

ratsnake Rat snakes are members – along with kingsnakes, milk snakes, vine snakes and indigo snakes – of the subfamily Colubrinae of the family Colubridae. They are medium to large constrictors and are found throughout much of the Northern Hemis ...

is one of about ten species within the American ratsnake genus ''Pantherophis''.

Description

A medium to large serpent, the gray ratsnake typically reaches an adult size of total length (including tail); however, the record is for a captive specimen at the Ridley 4-H Center in Tennessee. Unlike other ''Pantherophis'', whose conspicuous juvenile pattern fades into adulthood, the gray ratsnake in the southern part of its range does not undergo drastic ontogenetic changes in color or markings. Instead, it retains the juvenile pattern of dark elongate dorsal blotches separated by four, or more, pale gray body scales, a light gray crown with dark striping that forms an anteriorly facing spearpoint, and a solid band which covers the eyes and extends rearward to the posterior upper labial scales. However, in the northern part of its range it is black in adulthood, like '' P. alleghaniensis'' and '' P. obsoletus''. The venter is usually off-white or pale gray with darker irregular blotches, and a double row of black spots behind the divided anal plate of the vent. The dorsal scale rows around midbody are usually weakly keeled. Because the gray ratsnake shares its range with other members of its genus, hybrids of midlands x eastern ratsnakes are not uncommon.

Distribution and habitat

Native to North America, ''Pantherophis spiloides'' is commonly found in the forests of the eastern and central United States. It occurs relatively continuously throughout the major part of the eastern half of the United States, along the western edge of the Appalachian Mountains, from southwestern New England to the Gulf of Mexico, westward to the Mississippi River, and northward from northern Louisiana to southwestern Wisconsin. In Canada, this species is known to occur in two disjunct regions of southern Ontario: the Carolinian forest region along the north shore of Lake Erie in the southwest, and the Great Lakes/

St. Lawrence Saint Lawrence or Laurence ( la, Laurentius, lit. " laurelled"; 31 December AD 225 – 10 August 258) was one of the seven deacons of the city of Rome under Pope Sixtus II who were martyred in the persecution of the Christians that the Roman ...

region in the southeast.

Habitat

An agile climber, the gray ratsnake is at home from the ground to the tree tops in many types of hardwood forest and cypress stands, along tree-lined streams and fields, and even around barns and sheds in close proximity to people. Within its range, almost any environment rich in rodents, and vertical escape options, proves a suitable habitat for the gray ratsnake.

Diet and behavior

Diet

A scent-hunter and a powerful constrictor, ''P. spiloides'' feeds primarily on small mammals, birds, and bird eggs. Neonates and juveniles prefer a diet of frogs and lizards.

Behavior

When startled, the gray ratsnake, like other ratsnakes, stops and remains motionless with its body held in a series of wave-like kinks. The snake will also rattle its tail against whatever it is lying on, making an audible buzzing sound. The gray ratsnake will defend itself by raising its head and bluffing a strike. If handled, it will musk a victim by releasing the foul-smelling contents of its

cloaca In animal anatomy, a cloaca ( ), plural cloacae ( or ), is the posterior orifice that serves as the only opening for the digestive, reproductive, and urinary tracts (if present) of many vertebrate animals. All amphibians, reptiles and birds, a ...

, and will bite if necessary. However, the gray ratsnake is less likely to bite than other members of its genus, and wounds from a bite rarely require more than a small bandage.

Reproduction

Breeding in ''P. spiloides'' takes place from April to July. Females reach sexual maturity at 7–9 years of age. They deposit 5 to 27 eggs around mid-summer, and the hatchlings usually emerge in September.

Conservation status

The gray ratsnake is considered common across much of its range, but is listed as "of special concern" in Michigan and is also listed as rare in Wisconsin. The gray ratsnake is listed federally in Canada as "endangered" ( Carolinean population) and "threatened" ( Great Lakes – St. Lawrence population). In the state of Georgia, all indigenous, nonvenomous snakes are illegal to kill or capture, and are considered to be in the custody of the Georgia Department of Natural Resources.Georgia Wildlife.org Keeping Georgia Wildlife as Pets
georgiawildlife.org Habitat destruction and road mortality are leading causes of decline.