Educational information about ongoing projects with the Digital Engagement Lab

Species information

Bull frog - Lithobates catesbeianus

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The bullfrog is the largest frog in North America, with adults reaching a maximum length of 17 cm. These frogs can have a green to brownish appearance and lack a dorsolateral ridge. They are found in New Brunswick, Nova Scotia, Quebec, and Ontario. They have been introduced to British Columbia and are also found in the Eastern and Central US. Bullfrogs prefer large, permanent ponds but can be found in temporary aquatic habitats during the summer. Did you know females can lay egg masses containing up to 20,000 eggs?
Bull frog call

Green frog - Lithobates clamitans

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Green frogs have a dorsolateral ridge and dark bars on their legs. This species is found from Eastern Canada and the US, reaching to Manitoba, and has been introduced in British Columbia and Newfoundland. They are easily found in swamps, ponds, lakes, and brooks. Their calls are similar to a banjo string being plucked.
Green frog call

Mink frog - Lithobates septentrionalis

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The mink frog is identified by its motled spots and upturned eyes. It may have present, partial, or absent dorsolateral folds. It is found throughout Canada, including New Brunswick, Nova Scotia, Labrador, Quebec, Ontario, southern Manitoba, and the northeastern US. You can find them in large ponds, lakes, and rivers with vegetation. These frogs secrete a defensive odour, hence their name, "mink" frog.
Mink frog call