Frogs in Montana: Spotting Guide and Best Places to Start

Where are frogs most likely to be seen in Montana?

Frogs in Montana favor shallow, still water with plenty of vegetation. Look for them in marshes, beaver ponds, irrigation ditches, and along the edges of lakes. The Flathead Valley, Red Rock Lakes, and the Charles M. Russell National Wildlife Refuge are top spots. In backyards, any pond or even a rain-filled ditch can attract them. Check out our Montana wildlife guide for more habitat details.

What time of year is best for frog spotting?

Spring is prime time, typically from mid-April through June. Frogs emerge as temperatures rise and breed in temporary pools. Evening choruses peak after sundown, especially following a warm rain. Summer can still yield sightings near permanent water, but the best odds are in spring. For more about timing, see our general frog page.

How can I identify Montana's common frogs?

The boreal chorus frog is small (under 1.5 inches) with a dark stripe through the eye and a three-lined back. The Columbia spotted frog is larger (up to 4 inches) with black spots and a reddish belly. The northern leopard frog has rounded dark spots and a light ridge along its back. Listen for the chorus frog's short 'creek' call. Avoid confusing them with toads, which have bumpy, dry skin.

See our state animal guide for the next step.

What frog calls should I listen for?

The boreal chorus frog produces a series of short, grating notes that sound like a fingernail comb. The Columbia spotted frog's call is a low, throaty croak. The northern leopard frog makes a short snore-like sound followed by a few clucks. To improve your ear, try the free FrogID app. Timing: calls are loudest right after sunset in spring.

Are there any poisonous frogs in Montana?

No native frogs in Montana are dangerously poisonous to humans. The boreal chorus frog and Columbia spotted frog secrete mild skin toxins that are harmless unless you have an open cut. The western toad (not a frog) has parotoid glands, but touching it won't hurt you. Always wash your hands after handling any amphibian.