10 Smallest Frogs and Toads in the World

Here’s my list of the 10 smallest frogs and toads in the world. I determined the order by the frog’s max size. This is what my research found but if you find a smaller one, don’t hesitate to holla at me.

Image By Fred Kraus – Kraus F (2010) New genus of diminutive microhylid frogs from Papua New Guinea. ZooKeys 48: 39–59. doi:10.3897/zookeys.48.446, CC BY 3.0,

At 10.9 mm, Paedophryne kathismaphlox is 10th smallest frog in the world.


Stumpffia yanniki measures in at 9.8 –10.6 mm, making it the 9th smallest frog

Image by Evan Pickett

Gardiner’s frog (Sechellophryne gardineri) is only 10.1 mm long, make it the 8th smallest frog.

Image by Pierre Fidenci

Monte Iberia eleuth (Eleutherodactylus iberia) maxes out at 10 mm. 7th smallest frog


Izecksohn’s toad (Brachycephalus didactylus) is only 9.8 mm long. It’s the 6th smallest frog


Image By Fred Kraus – At the lower size limit for tetrapods, two new species of the miniaturized frog genus Paedophryne (Anura, Microhylidae) doi:10.3897/zookeys.154.1963, CC BY 3.0,

Paedophryne verrucosa is the 5th smallest frog, only being 9.3 mm max.


Paedophryne dekot is the 4rd smallest frog in the world. It measures in at a max of 9 mm.


Stumpffia contumelia is the 3rd smallest frog, measuring between 8.0 –8.9 mm

Image By Rittmeyer EN, Allison A, Gründler MC, Thompson DK, Austin CC – (2012). “Ecological Guild Evolution and the Discovery of the World’s Smallest Vertebrate”. PLoS ONE 7: e29797. DOI:10.1371/journal.pone.0029797., CC BY 2.5,

The second smallest frog in the world is the Paedophryne swiftorum measuring in at 8.6 mm.

Image By Rittmeyer EN, Allison A, Gründler MC, Thompson DK, Austin CC – E. N. Rittmeyer et al. (2012). “Ecological Guild Evolution and the Discovery of the World’s Smallest Vertebrate”. PLoS ONE 7: e29797. DOI:10.1371/journal.pone.0029797. → Figure 2 → tiff, CC BY 2.5,

The smallest frog in the world is Paedophryne amauensis. It is only 7.9 mm long.


NBA Teams but Frogs

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Chicago Bullfrogs


Philadelphia Spring Peepers

Plains Spadefoot by Stanley Trauth

San Antonio Spadefoots


Cleveland Cane Toads

Miami Reed (frogs)

Boston Coastal Tailed Frog

Atlanta Hairy Frogs

Fleischmann’s glass frog by Mauricio Rivera Correa

Golden State Glass Frogs

giant squaker

Los Angeles Squeckers


Rocket Frog by Wikiuser Froggydarb

Houston Rocket Frogs

Toronto Rain Frogs


Los Angeles Cricket (frogs)

Vietnamese mossy frog by Katie Chan

Minnesota Mossy Frogs

Brooklyn Natterjack Toads

Purple Frog

New Orleans Purple Frogs

Phoenix Suriname Toads

Detroit Parsley Frogs

Portland Poison Dart Frogs

Dallas Mountain Chickens


Washington Wood Frogs

Indiana Gopher Frogs


New York Clown Frogs


Oklahoma City Turtle Frog

Whites Tree Frog by LiquidGhoul

Utah Whites Tree Frogs

Sacramento Coquis

Denver Colorado River Toads

Budgett’s Frog by Ltshears

Milwaukee Budgett’s Frogs


Charlotte Horned Frogs

Orlando Mantellas



Ten Amphibians to get you into the Holiday Spirit

Nothing quite get’s me into the holiday spirits like some amphibians

Sandhill Frog by B.Maryan

This one reminds me of some peppermint bark

Vietnamese mossy frog

You could make a wreath out of these frogs

Red Salamander by Leif Van Laar

He has his santa suit on

Horned Frog

Red + Green = Christmas

Marbled Salamander by Brian Gratwicke

Like snow on the trees

Blue Spotted Salamander by Dr. John P. Clare

Like snowflakes in the sky

Anthony’s poison arrow frog by Tubifex

Like a candy cane

Frosted like a frosted ginger bread cookie.

The Siberian Salamander can survive temperature of -40 degrees, hopefully it doesn’t get that cold on Christmas.

The Ice Frog gets its name from being seen swimming under the ice often


Christmas Present Idea? Not a Frog


Are you looking for a Christmas gift for you friend, wive, husband, side chick? Well don’t get them a frog. Frog ownership is a serious commitment, not something to give to someone. Frogs take a lot of preparation, read this article I wrote on preparing for a pet frog. You can see that you can’t just give them a frog. Why not give them something else?

Here are some things you can give them and that will help frogs and amphibians.

Merch from the Alongside wildlife Foundation

Amphibian Foundation Membership

Calenders, coffee mugs, wall art, and greeting cards from the Honduras Amphibian Rescue and Conservation Center

Save the Frogs! Membership


Highlights of Cryptobranchid Week 2017

Last week on twitter, Cryptobranchid week was held. It was a week to honor the family Cryptobranchidae, a family of salamanders. Here are some of the highlights.


How Do Frogs Survive Winter Weather?

Snow covering trees and wood pile

Winter can be harsh on animals. Extreme cold temperature and snow covering everything. Life just sucks. Different animals adapt differently to the season. Birds fly south for winter, bears hibernate for winter, deer grow thicker fur, and old people go down to Florida, but what do frogs and toads do?

They hibernate but not all frogs and toads hibernate the same way. Aquatic frogs swim down to the bottom of a body of water and lay there for the winter. The bottom is slightly warmer than the top and often doesn’t freeze solid. The frogs must not dig into the dirt on the bottom too far or else they can’t breath. Because they are adept at digging, Toads can burrow down into the ground deep enough to avoid being frozen solid.

For tree frogs and terrestrial frogs, they don’t have the leg power to dig deep to avoid being frozen, what do they do? Well, they try to dig down into the leaf liter or hide in a log. This isn’t sufficient protection for the frogs so these frogs store high levels of glucose in their cells to prevent ice from forming in the cells and potentially puncturing it. This allows them to almost completely freeze but still be alive. The Wood Frog is an example of a frog that does that. The Wood Frog lives the farthest north of any North American frog species.

Wood Frog


The Hate on Keeping Reptiles and Amphibians as Pets


Pet owners of reptiles and amphibians are often criticized for their love of their animals. TV and movies often show people who own herps (reptiles and amphibians) as weird and strange. Articles are often posted about how reptiles and amphibians shouldn’t be kept as pets.  There’s so much hate and dislike for these wonderful creatures. I’m going to go over some of the benefits of owning herps.

Herps, especially snakes, are often feared and hated by the general public. This hate and fear can have serious consequences for the animals. There are festivals where they round up snakes and kill them. People try to kill all the snakes that they encounter which is the #1 cause of being bitten in the United States. Herp owners often try to change this attitude. Many owners are part of groups that do public events to try to show the positive signs of herps and to change people’s mind.


Having a pet herp can also inspire people to help animals. I didn’t know what I wanted to do with my life until I received some fire bellied toads. After feeding them and watching them, I learned what I wanted to do: save frogs. Many other scientists and conservationists have similar stories.

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Skylar, one of the original Fire Bellied Toads

Reptiles can be therapy animals and better than cats or dogs for some people. Reptiles don’t show emotions, like cats or dogs, which is better for some people. Some people are also allergic to cats and dogs but not reptiles. Reptiles are also less active than a dog so you don’t have to take it on a walk.

Bearded Dragons are great therapy animals

One common arguments that people make against having a herp as a pet is that they are a common invasive species. Common herp pets such as Burmese Pythons, Cane Toads, and tegus are all invasive species in Florida (and elsewhere). These species are to blame for problems but are they worse than more common pets? It is estimated that cats kill over a million birds per day in Australia. That is an insane number for one country. Cats are maybe one of the worst mammal invasive species on the planet. Dogs are also considered an invasive species. Fish are huge problems. People release their fish from their aquariums all the time. Goldfish are found in many water bodies around the world now and these fish can grow BIG. There are more examples but I think I made my point. I don’t think we should blame herps when it’s all pets that are invasive.


I will admit, there are problems with the herp pet trade. Some breeders keep their animals in terrible conditions. Some stores sell malnourished or sick animals. Animals are removed from the wild, even ones that are low in numbers. These imported animals could be spreading diseases such as Chytrid Fungus. We need to fix these problems. Better regulations need to be put in place.



Plethodontid Week

Last week was Plethodontid Week on Twitter. It’s a week to celebrate how cool the family Plethodontidae is! Here are some of the highlighted tweets.

Thanks Mary Kate O’Donnell for creating this week!

Look at that mustache!

I’ll take your word for it bud.

this salamander is a fungi.

So darn cute

I wonder if you can train it to roll over.

I just really like Red Salamanders

That’s some tail there buddy

Read the comments for TONS from our former herper of the week.

We even got some art for Plethodontid Week.


Jackson’s Climbing Salamander found after 42 Years


The Jackson’s Climbing Salamander (Bolitoglossa jacksoni) was rediscovered recently after being missing for 42 years. The Search for Lost Species project listed it as one of the top 25 most wanted species.  It was found in the Finca San Isidro Amphibian Reserve in Guatemala. The reserve is home to other recently re-discovered species such as the Cuchumatan golden toad (Incilius aurarius) and the  Black-eyed Treefrog (Agalychnis moreletii).

The Jackson’s Climbing Salamander is part of the family Plethodontidae – the Lungless Salamander family.  Not much is known about the salamander because there’s only been a three ever seen. One of the species was taken as a preserved specimen, another was brought to Museum of Vertebrate Zoology at UC Berkeley to live in captivity but it either escaped or a staff member stole it.


Defense Mechanisms of Frogs and Toads

It’s a big, tough world out there and frogs can’t carry guns so they need other ways to protect themselves.


Frogs can use their size to their advantage in the fight against predators. The smaller the frog, the harder it is to find. Sometimes, you just need to avoid the fight. Other times, you want to be big enough to fight. Just like in high school, the smaller you are, the easier you are to bully, but for frogs, the smaller you are, the easier it is to be eaten. Hell, even other frogs – even frogs of your own species will eat you if you are smaller. Sometimes you just gotta fight back.


Also some species will try to make themselves look larger by standing on their toes. Other species fill up with air to make them look fatter.


Frogs have two different choices when it comes to coloration. They can be bright which alerts other animals to their toxicity or they can try to blend in.  Bright colors are like warning signals and the fancy people call it aposematism. There’s a reason why most frogs are green, it allows them to blend into vegetation easier. Brown and gray is also a common colors that allows them to blend in.


A good way to avoid being eaten, is to make it so no one wants to eat you. Best way to do this is to poisonous. Frogs from the family Dendrobatidae (Poison Dart Frog family) obtain their toxicity from their diets. Meanwhile, true toads from the family Bufonidae can make their own toxins.


Sometimes, you just gotta fake it. Frogs like to pretend that they are things they aren’t. One of the more popular options is to pretend to be a leaf. There are tons of frogs that look like leaves.

Besides impersonating leaves, frogs can also impersonate poisonous frogs. These frogs have bright colors just like other frogs but don’t actually contain any poison.


Sometimes, you just gotta scream to try to scare them away.

Other Ways

Member of the genus Bombina (Fire bellied Toads), and a few other species, use the unkenreflex. For the unkenreflex, the toad arches it’s back to show off it’s belly that has warning colors on it.


The Horror Frog (Trichobatrachus robustus) will literally break it’s bones in it’s arms to use as claws to protect itself.