Vermont’s cold winters and lush summers support several frog species in its ponds and streams. Understanding the types of frogs in Vermont helps you identify them during hikes or backyard visits. This guide covers the most common species, their habitats, and how to spot them.
Frogs are important for Vermont’s ecosystem. They control insects and serve as food for birds and snakes. Knowing which frogs live near you makes nature walks more interesting.
Types Of Frogs In Vermont
Vermont hosts around 10 native frog species. They range from tiny spring peepers to large bullfrogs. Each species has unique calls, colors, and behaviors. Below is a breakdown of the main groups.
True Frogs (Ranidae Family)
True frogs have smooth skin and long legs. They live near water year-round. Vermont has several common true frogs.
American Bullfrog
- Size: Up to 8 inches long
- Color: Green or brown with no distinct spots
- Call: Deep “jug-o-rum” sound
- Habitat: Large ponds, lakes, slow rivers
- Active: Late spring to early fall
Bullfrogs are the largest frog in Vermont. They eat almost anything they can fit in their mouths, including small turtles and other frogs. You’ll hear their loud calls on warm summer nights.
Green Frog
- Size: 2 to 4 inches
- Color: Green with small dark spots
- Call: Single “gunk” sound like a banjo string
- Habitat: Shallow ponds, marshes, stream edges
- Active: April through October
Green frogs are common near any still water. They sit at the water’s edge and jump in when approached. Their call is distinct and easy to recognize.
Pickerel Frog
- Size: 2 to 3.5 inches
- Color: Brown with two rows of square spots
- Call: Low snore-like sound
- Habitat: Cold streams, spring seeps, wet meadows
- Active: March to November
Pickerel frogs look similar to leopard frogs but have more rectangular spots. They prefer cooler water than most other frogs. Their skin secretes a mild toxin that deters predators.
Northern Leopard Frog
- Size: 2 to 4 inches
- Color: Green or brown with round dark spots
- Call: Guttural chuckle or grunt
- Habitat: Grasslands near ponds, marshes
- Active: March to October
Northern leopard frogs are named for their spotted pattern. They often wander far from water in summer to hunt insects in fields. Their numbers have declined in some areas due to habitat loss.
Tree Frogs (Hylidae Family)
Tree frogs have sticky toe pads for climbing. They are smaller than true frogs and often have bright colors. Vermont has three main tree frog species.
Gray Tree Frog
- Size: 1.5 to 2 inches
- Color: Gray, green, or brown with dark blotches
- Call: Musical trill lasting 1-3 seconds
- Habitat: Woodlands, shrubs near ponds
- Active: April to September
Gray tree frogs can change color to match their surroundings. They are excellent climbers and often found on tree trunks or porch lights at night. Their call is a pleasant trill that carries through forests.
Spring Peeper
- Size: 0.8 to 1.2 inches
- Color: Tan or brown with an X-shaped mark on back
- Call: High-pitched “peep” repeated rapidly
- Habitat: Woodland ponds, temporary pools
- Active: March to June (most vocal in spring)
Spring peepers are Vermont’s earliest frog callers. They emerge as soon as ice melts, sometimes in late February. Their chorus can be deafening near breeding ponds. Despite their small size, they are heard from far away.
Eastern Wood Frog
- Size: 1.5 to 2.5 inches
- Color: Brown, tan, or reddish with a dark mask
- Call: Quacking sound like a duck
- Habitat: Moist forests, vernal pools
- Active: March to November
Wood frogs are unique because they can freeze solid in winter and thaw in spring. They breed in temporary pools that dry up by summer. Their quacking call is often the first frog sound of the year.
Toads (Bufonidae Family)
Toads have dry, warty skin and shorter legs. They spend more time on land than true frogs. Vermont has two common toad species.
American Toad
- Size: 2 to 4 inches
- Color: Brown, gray, or olive with warts
- Call: Long, high-pitched trill lasting 10-30 seconds
- Habitat: Gardens, fields, forests
- Active: April to October
American toads are common in backyards. They eat slugs, beetles, and other garden pests. Their warts are not dangerous to humans, but they secrete a mild toxin that irritates pets if licked.
Fowler’s Toad
- Size: 2 to 3 inches
- Color: Gray or brown with three or more warts per dark spot
- Call: Harsh, nasal “waaah” lasting 2-4 seconds
- Habitat: Sandy areas, lake shores, riverbanks
- Active: May to September
Fowler’s toads look similar to American toads but have more warts per spot. They prefer drier, sandier habitats. Their call sounds like a crying baby.
Other Frog Species
Vermont also has a few less common frogs. These species are harder to find but worth knowing.
Mink Frog
- Size: 2 to 3 inches
- Color: Green with dark mottling
- Call: Rapid clicking like a typewriter
- Habitat: Cold, clear ponds with lily pads
- Active: May to August
Mink frogs smell like mink when handled. They are rare in Vermont and found only in the northern part of the state. Their clicking call is easy to mistake for insects.
Northern Cricket Frog
- Size: 0.6 to 1.2 inches
- Color: Brown, gray, or green with a triangle between eyes
- Call: Two metallic clicks like stones hitting
- Habitat: Warm ponds, marshes, slow streams
- Active: May to September
Northern cricket frogs are Vermont’s smallest frog. They are considered a species of special concern due to declining populations. They jump in zigzag patterns to escape predators.
How To Identify Frogs In Vermont
Identifying frogs takes practice. Use these steps to tell species apart.
- Listen to calls: Each species has a unique sound. Record calls with your phone and compare online.
- Look at size: Bullfrogs are huge; spring peepers are tiny.
- Check skin texture: Smooth skin means frog; warty skin means toad.
- Note eye position: Wood frogs have dark masks; green frogs have large eardrums.
- Observe habitat: Stream frogs differ from pond frogs.
Best Times To See Frogs
- Spring (March-May): Breeding season for wood frogs and spring peepers
- Summer (June-August): Bullfrogs and green frogs are most active
- Fall (September-October): Juvenile frogs leave ponds for land
- Winter: Most frogs hibernate; wood frogs freeze
Frog Habitats In Vermont
Different frogs prefer different places. Knowing habitats helps you find specific species.
Vernal Pools
These temporary ponds fill with spring rain and dry by summer. Wood frogs and spring peepers breed here. No fish live in vernal pools, so tadpoles survive better.
Permanent Ponds And Lakes
Bullfrogs, green frogs, and mink frogs live in permanent water. These habitats have fish that eat tadpoles, so frogs lay many eggs.
Streams And Rivers
Pickerel frogs prefer cold, flowing water. They hide under rocks along stream banks. Gray tree frogs live in trees near streams.
Forests And Meadows
American toads and northern leopard frogs wander far from water. They hunt insects in fields and gardens. Wood frogs live in damp forest floors.
Frog Conservation In Vermont
Some frog species face threats. Habitat loss, pollution, and climate change affect populations. You can help by protecting wetlands and reducing pesticide use.
Threatened Species
- Northern cricket frog: Declining due to habitat loss
- Mink frog: Rare in Vermont, sensitive to water quality
- Fowler’s toad: Losing sandy beach habitats
How To Help
- Don’t release pets or bait frogs into the wild
- Keep dogs away from breeding ponds
- Report sick or dead frogs to Vermont Fish & Wildlife
- Build a small backyard pond without fish
- Avoid using chemicals near water
Frog Calls Quick Guide
Learning calls is the easiest way to identify frogs. Here is a simple reference.
- American bullfrog: Deep “jug-o-rum”
- Green frog: Single “gunk”
- Pickerel frog: Low snore
- Northern leopard frog: Grunt or chuckle
- Gray tree frog: Musical trill
- Spring peeper: High-pitched “peep”
- Wood frog: Quack like a duck
- American toad: Long trill
- Fowler’s toad: Nasal “waaah”
- Mink frog: Rapid clicking
- Northern cricket frog: Two metallic clicks
Frequently Asked Questions
What Is The Most Common Frog In Vermont?
The green frog is the most common species. You can find them in almost any pond or marsh across the state.
Are There Poisonous Frogs In Vermont?
No frog in Vermont is dangerously poisonous to humans. Pickerel frogs and American toads secrete mild toxins that may irritate skin but are not deadly.
When Do Frogs Start Calling In Vermont?
Wood frogs and spring peepers start calling in late March or early April, sometimes as early as February during warm spells.
Can You Keep Vermont Frogs As Pets?
Yes, but check state regulations. You can keep native frogs like green frogs or American toads if you have a fishing license. Do not take frogs from protected areas.
Why Do Frogs Stop Calling Suddenly?
Frogs stop calling when they sense danger, such as a predator or human nearby. They also stop after mating season ends or during dry weather.
Final Tips For Frog Watching
Frog watching is a fun family activity. Go out on warm, rainy nights with a flashlight. Move slowly and listen carefully. Use a field guide or app to confirm identifications.
Remember that handling frogs can harm their sensitive skin. If you pick one up, wet your hands first and return it quickly. Never use insect repellent on your hands before touching frogs.
Vermont’s frogs are indicators of healthy ecosystems. By learning the types of frogs in Vermont, you become a better steward of nature. Enjoy the chorus of spring peepers and the deep rumble of bullfrogs on summer nights.
Keep a journal of what you see and hear. Share your findings with local naturalist groups. Every observation helps scientists track population changes. Your backyard pond might host several species you never noticed before.
With patience, you’ll soon recognize each frog by sight and sound. The more you look, the more you’ll appriciate Vermont’s amphibian diversity. Happy frog hunting!