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Ontario Reptile and Amphibian Atlas

Reptiles and amphibians are experiencing global declines of 20 and 40 percent respectively. In Ontario, 75 percent of reptiles and 35 percent of amphibians are listed as nationally and provincially at risk.


Blanding's turtle © Scott Gillingwater

Big changes to the Ontario Reptile and Amphibian Atlas

The Atlas is transitioning into a new era, with Ontario Nature wrapping-up the data collection phase of this project as of December 1, 2019. Now that we have discontinued our app and online form, we encourage you to continue submitting any future observations through the ‘Herps of Ontario’ project on iNaturalist or directly to the Natural Heritage Information Centre for species at risk. To learn more about the transition, read our blog.

Thank you to our atlas users who have contributed so many valuable sightings, we owe the success of this program to you!

Bullfrog © Brad Thompson

Field Guide

Check out our comprehensive field guide about Ontario’s reptiles and amphibians including descriptions, habitat, biology, threats and trends, range maps, and current status and protection.

Smooth greensnake © Mike Weissmann

Get Involved

Five-lined skink © Noah Cole


By contributing sightings on the atlas your data directly supports conservation initiatives across the province. A few of the ways your data informs conservation include:

Gray ratsnake field research © Scott Gillingwater

The Ontario Reptile and Amphibian Atlas is generously supported by: