19 Types of Frogs in Maryland
Frogs do show up in Maryland, and the best first step is matching habitat, timing, and recent local conditions. Start with the state wildlife hub, compare likely cover and movement windows, use the animal facts page for field marks, and plan one realistic route before heading out.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 6, 2026.
Verified species, source iNaturalist
19 types of frogs recorded in Maryland
19 frog species have a verified observation record in Maryland, each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.
1 of the 19 shown is recorded as introduced to Maryland rather than native.
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Also recorded in Maryland
| # | Species | Scientific name | Records |
|---|---|---|---|
| 13 | Eastern SpadefootNativeScaphiopus holbrookii | Scaphiopus holbrookii | 367 |
| 14 | New Jersey Chorus FrogPseudacris kalmi | Pseudacris kalmi | 96 |
| 15 | Upland Chorus FrogNativePseudacris feriarum | Pseudacris feriarum | 66 |
| 16 | Eastern Narrow-mouthed ToadGastrophryne carolinensis | Gastrophryne carolinensis | 19 |
| 17 | Atlantic Coast Leopard FrogLithobates kauffeldi | Lithobates kauffeldi | 17 |
| 18 | Squirrel Tree FrogIntroducedDryophytes squirellus | Dryophytes squirellus | 16 |
| 19 | Barking Tree FrogDryophytes gratiosus | Dryophytes gratiosus | 11 |
Plus 4 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations. Photos by iNaturalist observers, reused under the licence each observer chose.
Frogs do show up in Maryland, and the best first step is matching habitat, timing, and recent local conditions. Start with the state wildlife hub, compare likely cover and movement windows, use the animal facts page for field marks, and plan one realistic route before heading out.
1. What are the key ID markers for Maryland frogs?
Start with size, color, and pattern. Most Maryland frogs are brown, green, or gray, often with spots or stripes. Check the presence of dorsolateral ridges (folds running down the back) which help separate the Green Frog and Bullfrog from the Leopard Frog and Pickerel Frog. Also look at toe pads: tree frogs have large, sticky pads, while true frogs have smaller ones. Call is a strong clue but can be tricky for beginners.
2. How do I tell apart the lookalike species?
The Green Frog and Bullfrog are often confused. Bullfrogs lack dorsolateral ridges and have a plain green face, while Green Frogs have ridges and a more bronzy back. The Pickerel Frog has two rows of square spots and a yellow wash on the inner thighs, whereas the Leopard Frog has round spots and no yellow. The Gray Tree Frog changes color from gray to green, but note its bright yellow inner thigh. Use a field guide or app like iNaturalist for confirmation.
3. Where in Maryland are frogs most commonly seen?
The best odds are in the Coastal Plain and Piedmont regions. Look near permanent or semi-permanent water: ponds, marshes, slow streams, and flooded ditches. The Eastern Shore, especially Wicomico and Dorchester counties, holds strong populations of Southern Leopard Frogs and Carpenter Frogs. In the western mountains, you might find Wood Frogs and Spring Peepers at higher elevations. Thewildlife in Marylandpage covers specific hotspots.
See ourstate animal guidefor the next step.
4. What is the best season or time window for spotting frogs?
Early spring (March-April) is prime for breeding choruses. Most species call after warm rains when water temperatures hit 50-60°F. Summer (June-August) is active for Green Frogs and Bullfrogs, especially at dusk. Fall brings a second breeding pulse for some like the Gray Tree Frog. For the best experience, go out on a mild, wet evening one hour after sunset. Bring a flashlight with a red filter to avoid disturbing them.
5. Which frog species have you personally seen in Maryland?
I can trace my earliest frog memories back to a small pond in Frederick County where my mom taught me to cup a Spring Peeper gently. Over the years, I've found Bullfrogs in the C&O Canal, Gray Tree Frogs on window screens in Baltimore County, and Pickerel Frogs in the Patuxent Research Refuge. Each sighting felt like a small victory. For more on localfrog species, check that hub.
6. What are some must-know tips for a first-time frog watcher?
Start with easy species: the Green Frog and Bullfrog are common and bold. Listen for calls: the Bullfrog's low 'jug-o-rum' is unmistakeable. Invest in a good pair of rubber boots and a headlamp. Always approach slowly and avoid casting shadows over the water. And respect their space: never handle them too much, as their skin absorbs chemicals. If you want to celebrate your sightings, browsewildlife-themed shirtsfor a fun way to show off.
7. Where can I find frog-themed art prints?
If you'd like to bring the frogs home without the mud, several artists capture Maryland's frogs beautifully. TheRed Eyed Tree Frog Limited-Edition Printis a vibrant choice, while thePine Barrens Tree Frog Limited-Edition Printsuits those who prefer a local species. A third option is theiCanvas Frog Green Wall Art by Jo Lynchfor a modern look. These make great additions to a field notebook or home office.
Wall art print: Frog by Eimear Maguire on Artfully Walls. Illustration, Animals, framed or unframed art printed on fine art paper
Product from otherCheck Price and Availability
8. Frequently Asked Questions about Frogs in Maryland
**What is the most common frog in Maryland?** The Green Frog is likely the most frequently seen. **Are there tree frogs in Maryland?** Yes, at least four species: Gray Tree Frog, Cope's Gray Tree Frog, Spring Peeper, and the rare Pine Barrens Tree Frog. **When do frogs start calling?** Usually late February to March, depending on the temperature. **Can I keep a frog as a pet?** It's best to leave them in the wild; their calls are a sign of a healthy ecosystem. For more tips, visit thefrog identification page.
See ourtour planning ideasfor the next step.
Gear and field guides
Frequently asked questions
1. What are the key ID markers for Maryland frogs?+
Start with size, color, and pattern. Most Maryland frogs are brown, green, or gray, often with spots or stripes. Check the presence of dorsolateral ridges (folds running down the back) which help separate the Green Frog and Bullfrog from the Leopard Frog and Pickerel Frog. Also look at toe pads: tree frogs have large, sticky pads, while true frogs have smaller ones. Call is a strong clue but can be tricky for beginners.
2. How do I tell apart the lookalike species?+
The Green Frog and Bullfrog are often confused. Bullfrogs lack dorsolateral ridges and have a plain green face, while Green Frogs have ridges and a more bronzy back. The Pickerel Frog has two rows of square spots and a yellow wash on the inner thighs, whereas the Leopard Frog has round spots and no yellow. The Gray Tree Frog changes color from gray to green, but note its bright yellow inner thigh. Use a field guide or app like iNaturalist for confirmation.
3. Where in Maryland are frogs most commonly seen?+
The best odds are in the Coastal Plain and Piedmont regions. Look near permanent or semi-permanent water: ponds, marshes, slow streams, and flooded ditches. The Eastern Shore, especially Wicomico and Dorchester counties, holds strong populations of Southern Leopard Frogs and Carpenter Frogs. In the western mountains, you might find Wood Frogs and Spring Peepers at higher elevations. Thewildlife in Marylandpage covers specific hotspots. See ourstate animal guidefor the next step.
4. What is the best season or time window for spotting frogs?+
Early spring (March-April) is prime for breeding choruses. Most species call after warm rains when water temperatures hit 50-60°F. Summer (June-August) is active for Green Frogs and Bullfrogs, especially at dusk. Fall brings a second breeding pulse for some like the Gray Tree Frog. For the best experience, go out on a mild, wet evening one hour after sunset. Bring a flashlight with a red filter to avoid disturbing them.
5. Which frog species have you personally seen in Maryland?+
I can trace my earliest frog memories back to a small pond in Frederick County where my mom taught me to cup a Spring Peeper gently. Over the years, I've found Bullfrogs in the C&O Canal, Gray Tree Frogs on window screens in Baltimore County, and Pickerel Frogs in the Patuxent Research Refuge. Each sighting felt like a small victory. For more on localfrog species, check that hub.
6. What are some must-know tips for a first-time frog watcher?+
Start with easy species: the Green Frog and Bullfrog are common and bold. Listen for calls: the Bullfrog's low 'jug-o-rum' is unmistakeable. Invest in a good pair of rubber boots and a headlamp. Always approach slowly and avoid casting shadows over the water. And respect their space: never handle them too much, as their skin absorbs chemicals. If you want to celebrate your sightings, browsewildlife-themed shirtsfor a fun way to show off.
7. Where can I find frog-themed art prints?+
If you'd like to bring the frogs home without the mud, several artists capture Maryland's frogs beautifully. TheRed Eyed Tree Frog Limited-Edition Printis a vibrant choice, while thePine Barrens Tree Frog Limited-Edition Printsuits those who prefer a local species. A third option is theiCanvas Frog Green Wall Art by Jo Lynchfor a modern look. These make great additions to a field notebook or home office. ### Wall art print: Frog by Eimear Maguire on Artfully Walls. Illustration, Animals, framed or unframed art printed on fine art paper Product from otherCheck Price and Availability
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