By Austin Little
Frogs, toads, and salamanders are in trouble worldwide. Here's what's hurting them, why it matters to the rest of us, and what a regular person can actually do about it.
AI disclosure. This page was drafted with AI assistance and edited for Apiary. We don't invent quotes, stats, people, or events. If something looks off, tell Austin — that's the point of a living hive.
Maybe you grew up hearing frogs on summer nights — a chorus so loud it drowned out the TV — and lately it's quieter. Maybe you saw a headline about frogs going extinct and wondered whether it was hype. Or maybe your kid asked why there are no tadpoles in the creek anymore and you didn't have an answer.
The short version is that amphibians — frogs, toads, salamanders, newts, and a group of legless burrowing animals called caecilians — are among the most threatened groups of animals on Earth.
This guide explains, in plain English, what's driving that decline, why it matters even if you've never thought twice about a frog, and what an ordinary person can do — in a backyard, on a hike, or at the pet store — that actually helps.
The short answer
Frogs and other amphibians are disappearing for several reasons that often stack on top of each other:
- Habitat loss — wetlands drained, forests cleared, streams paved over.
- Disease — especially a fungus called chytrid, which has devastated frog populations on several continents.
- Pollution and chemicals — including some pesticides and fertilizer runoff.
- Climate change — shifting rain, heat, and drought patterns that dry out breeding ponds or change when frogs breed.
- Invasive species — predators like non-native fish and bullfrogs in some regions.
- Overcollection — for food, medicine, and the pet trade, in some places.
No single villain explains everything. In many places, it's a pileup.
Just how bad is it?
The best global picture comes from large scientific assessments that try to evaluate every known amphibian species.
Some species have already vanished. One of the most famous examples is the golden toad of Monteverde, Costa Rica — a bright orange toad that lived in a small area of cloud forest. Its disappearance from a protected forest became a symbol of how amphibians could vanish even where nobody was cutting down trees.
That "even in protected places" part is what made scientists sit up. Habitat loss explains a lot, but something else was killing frogs in pristine areas too.
Why amphibians are so vulnerable
To understand why frogs are hit so hard, it helps to understand what makes them unusual.
They live double lives
Most frogs start life in water as eggs and tadpoles, then transform into land-dwelling adults. (That's what "amphibian" roughly means: a double life.) That means they need two healthy habitats — clean water for breeding and suitable land nearby for living. Damage either one, and the population suffers. Lose the pond, and adults have nowhere to breed. Lose the woods around the pond, and young frogs have nowhere to go after they leave the water.
Their skin is a sponge
Amphibian skin is thin and permeable. Many frogs actually drink and breathe partly through their skin. That's an amazing adaptation, but it also means chemicals in water and soil can get into their bodies easily, and skin infections can be deadly because the skin is doing so much of the work of keeping them alive.
They don't travel far
Many amphibians stay close to where they were born and return to the same ponds to breed. If a local population is wiped out, it may not be quickly replaced by frogs moving in from elsewhere — especially if roads, farms, or cities stand in the way.
They're sensitive to timing
Many frogs breed when rains come or temperatures reach a certain point. If ponds dry up before tadpoles transform, an entire year's babies can die. Shifts in rain and temperature patterns can throw these delicate timings off.
All of this is why people sometimes call amphibians an "indicator" group: they often show stress in an ecosystem early. When frogs are struggling, it's frequently a sign that the water, land, or climate around them is changing in ways that may matter to other species too.
Cause #1: Habitat loss
This is the oldest and most widespread threat. Wetlands have been drained for farms and housing for centuries. Streams have been straightened, piped, or channeled into concrete. Forests have been cut. Small seasonal ponds — the kind that fill in spring and dry up in summer — are especially easy to bulldoze because they don't look like "real" wetlands for much of the year.
Those small temporary ponds are actually gold for many amphibians. Because they dry out, they don't support fish, which eat eggs and tadpoles. Many frog and salamander species depend on them.
Roads add another layer. Many amphibians migrate on rainy nights between winter shelters and breeding ponds. A road in the middle of that route can kill large numbers in a single night.
Cause #2: Chytrid fungus — the disease that changed everything
If habitat loss is the slow squeeze, chytrid is the wildfire.
What it is
The main culprit is a microscopic fungus with a long name: Batrachochytrium dendrobatidis, usually shortened to Bd. It infects the skin of amphibians.
A second chytrid for salamanders
A related fungus, Batrachochytrium salamandrivorans, or Bsal, mainly attacks salamanders and newts. Scientists are especially worried about it reaching North America, which has an extraordinary diversity of salamanders. The U.S. government has placed restrictions on importing many salamander species to help keep Bsal out.
Not every frog dies
Here's a hopeful thread: some species and populations survive infection, and some that crashed have started to recover in certain places. Scientists are studying why — genetics, skin bacteria that fight the fungus, local temperatures, and more. That research may help with future conservation.
Other diseases
Chytrid isn't the only one. Viruses called ranaviruses also cause die-offs in amphibians (and some fish and reptiles). Like chytrid, they can spread through water and contaminated equipment.
Cause #3: Pollution and chemicals
Because amphibians absorb so much through their skin and spend their early lives in water, pollution can hit them hard. Some ways this happens:
- Pesticides and herbicides washing from lawns, farms, and roadsides into ponds and streams.
- Fertilizer runoff, which can feed algae blooms that change water quality and oxygen levels.
- Pollutants that interfere with hormones, which researchers have studied for possible effects on development and reproduction.
Chemicals rarely act alone. A frog stressed by pollution may be less able to fight off disease. This is the pileup idea again: many smaller stresses can add up to a collapse.
Cause #4: Climate change
Amphibians depend on water and temperature in very specific ways, so shifts in climate can be a big deal:
- Ponds drying out sooner during droughts or hotter summers, before tadpoles can transform.
- Breeding seasons shifting, so eggs are laid at the wrong time — for example, an early warm spell followed by a hard freeze.
- Mountain species running out of room, because as their cool habitats warm, they can only move uphill so far.
- Changes in disease dynamics, since how chytrid behaves depends partly on temperature and moisture.
Cause #5: Invasive species
Sometimes the threat is another animal that doesn't belong.
- Non-native fish, like trout stocked into once-fishless mountain lakes for sport fishing, can eat tadpoles and eggs.
- American bullfrogs, native to eastern North America, have been introduced to many other places, where they eat smaller frogs and may carry diseases.
- Crayfish and other predators introduced to new waters.
- Cane toads, famously introduced to Australia, have harmed native wildlife there — though in their case, the frogs themselves are the invader.
Cause #6: Overcollection
In some parts of the world, wild frogs are harvested in large numbers for food, traditional medicine, or the pet trade. Where this happens on a big scale, it can deplete local populations. The international pet trade also moves animals — and their diseases — around the world, which links back to the spread of chytrid.
Why should a regular person care?
It's fair to ask. You might not think about frogs unless one hops across your porch. Here's why they matter.
They eat bugs. Lots of bugs.
Adult frogs and toads eat insects and other invertebrates, including some that bother people and crops. Tadpoles eat algae and other material in ponds, helping keep water systems in balance. When amphibians disappear, those jobs go undone or shift in ways that ripple through the ecosystem.
They feed lots of other animals
Herons, snakes, raccoons, fish, owls, and many other animals eat frogs, tadpoles, and salamanders. Amphibians are a key link in the food web between small creatures and bigger ones.
They're an early warning system
Because amphibians are sensitive to water quality, chemicals, and climate, their trouble can flag problems that affect other wildlife and, sometimes, people.
They've given us medicine and science
Scientists have studied compounds from amphibian skin for possible medical uses, and frogs have been important in research on biology and development for a long time. Losing species means losing that potential knowledge forever.
And they're simply remarkable
Frogs that freeze solid in winter and thaw in spring. Salamanders that can regrow limbs. Tiny frogs that carry tadpoles on their backs. A summer night with a full frog chorus is one of the great free shows on Earth.
What you can actually do
Here's the encouraging part. You can't single-handedly stop a global fungus. But regular people can make real differences at the local level, and local is where most amphibians live and die.
1. Don't move frogs, tadpoles, or pond water
This is the single most important everyday rule, and almost nobody knows it.
- Don't move tadpoles, eggs, or frogs from one pond to another, even with good intentions.
- Don't dump aquarium water, pet frogs, or fish into the wild.
- Never release a pet amphibian outdoors. It may carry diseases that local wild amphibians have never faced. If you can't keep a pet frog anymore, contact a local herpetological society, reptile rescue, or the store.
Moving animals and water is one of the main ways diseases and invasive species spread.
2. Clean your boots and gear
If you hike, fish, kayak, or wade between different ponds, streams, or lakes, clean and dry your boots, nets, and boat before moving to a new water body. Scrub off mud, rinse, and let things dry completely.
This is especially important in areas where agencies have flagged amphibian diseases.
3. Make your yard frog-friendly
If you have even a small yard, you can help local amphibians:
- Build a small pond without fish. Fish eat eggs and tadpoles. A shallow, gently sloped edge lets frogs climb in and out. Native plants around the edge give shelter.
- Let natural colonizers arrive. Don't stock the pond with frogs or tadpoles from elsewhere. If local frogs are nearby, they'll often find it on their own.
- Leave some wild cover: leaf litter, logs, rocks, and patches of taller plants give amphibians shade, moisture, and places to hide.
- Skip or minimize lawn chemicals. Pesticides, herbicides, and fertilizers can wash into ponds and harm amphibians. If you must use them, follow labels exactly and keep them well away from water.
- Avoid slug pellets and similar baits where possible, since they can harm wildlife that eats slugs. Check labels for wildlife warnings.
- Watch the mower. Toads and frogs hide in tall grass. Mowing a little higher and walking the area first helps.
- Cover or fence off window wells and pool drains where amphibians can get trapped. A small ramp or board in a pool or window well can give them an escape route.
- Turn off unnecessary outdoor lights at night, which can disrupt nocturnal animals.
4. Protect the wetlands near you
Small seasonal ponds and wetlands are easy to lose. If your town is considering a development that would drain a wetland, show up at the public meeting. Support local land trusts and parks that protect wetlands and streams. Your voice can carry weight in local planning decisions, which are often where these habitats are won or lost.
5. Join a citizen science project
Scientists need eyes and ears. Programs exist where volunteers learn frog calls and listen at local ponds on set evenings, reporting which species they hear. Apps like iNaturalist let you photograph and log amphibians you find, contributing to research databases. Local nature centers and state wildlife agencies often run surveys too.
It's a wonderful family activity. Learning to tell a spring peeper from a bullfrog by sound is surprisingly fun.
6. Be a careful pet owner — or skip amphibian pets
If you keep amphibians, buy captive-bred animals from responsible sources, keep them indoors, never release them, and dispose of their water and bedding safely (not into storm drains or ponds). If you're thinking about getting a pet frog, it's worth asking whether you're ready for that long-term commitment.
7. Support conservation groups
Organizations work on breeding endangered species in captivity, protecting habitat, researching disease, and reintroducing animals to the wild. Some zoos run amphibian rescue and breeding programs for species that have nearly vanished in the wild.
What not to do
Good intentions can backfire. Avoid:
- "Rescuing" tadpoles by moving them to a different pond or your aquarium.
- Handling frogs a lot. If you must move one out of harm's way (like off a road), wet your hands first, avoid sunscreen and lotions, and move it in the direction it was traveling.
- Adding goldfish or koi to a pond meant for frogs.
- Releasing a pet frog "to be free."
Is there any good news?
Yes, and it's worth hearing.
- Some frog populations that crashed from chytrid have begun to recover in certain places, as survivors pass on resistance or conditions change.
- Captive breeding programs have kept some species alive that might otherwise have vanished, with some reintroductions into the wild.
- More people than ever know about amphibian decline and are building backyard ponds, joining frog-call surveys, and cleaning their boots.
Frogs are tougher than their thin skin suggests. Given breathing room, many populations can bounce back.
Frequently asked questions
Are frogs really going extinct?
Some species already have, and a large share of amphibian species are considered threatened. But many species are still common in many places. The concern is about the overall trend and the many species at serious risk.
What is the main reason frogs are disappearing?
There isn't one. Habitat loss is the most widespread threat. Chytrid fungus has caused some of the most dramatic, rapid declines. Climate change, pollution, invasive species, and overcollection add to the pressure.
Can chytrid fungus hurt people?
The amphibian chytrid fungi aren't known to infect humans.
Why haven't I heard frogs this year?
It could be many things: weather, a dry spring, a pond that was filled in, a local die-off, or just natural ups and downs. One quiet year doesn't prove a long-term decline, but if it keeps happening, it might be worth reporting to a local wildlife agency or citizen science program.
Should I build a pond for frogs?
If you have the space and can avoid fish and chemicals, a small, shallow, plant-edged pond can be great habitat. Let local frogs find it on their own rather than bringing them in.
Is it okay to pick up a frog?
Try not to. If you have to move one out of danger, wet your hands, be gentle, keep it brief, and wash your hands afterward.
The takeaway
Frogs and other amphibians are disappearing because of a pileup of threats: lost wetlands, a devastating skin fungus spread around the world by people, pollution, a changing climate, invasive predators, and overcollection. Their double life in water and on land, plus their sponge-like skin, makes them especially sensitive.
You can't fix all of that alone, but you can do real good where you live: don't move frogs or pond water, clean your gear, make your yard friendlier with a fish-free pond and fewer chemicals, protect local wetlands, and lend your ears to a frog-call survey. The summer chorus is worth saving, one pond at a time.