Reptiles

Ratsnake, Gray  | Pantherophis spiloides  |  Carolinian population

Status: Endangered

Last Examination and Change: April 2007 (Reassigned)

Canadian Occurrence: ON

Status Criteria: B2ab(iii,iv,v)

Reason for Designation: This population consists of only 4 highly disjunct subpopulations in southwest Ontario, all of which are small and isolated, and surrounded by agricultural and developed terrain. Their slow rate of reproduction and late age of maturity makes them especially vulnerable to increases in adult mortality from road traffic and agricultural machinery.

Status History: The species was considered a single unit and designated Threatened in April 1998 and in May 2000. Split into two populations in April 2007. The Carolinian population was designated Endangered in April 2007.

Find out more about this species on the Species at Risk Act Public Registry

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