There is no single number for how long a frog can “hold its breath” underwater. The phrase is misleading because many adult frogs can absorb oxygen directly through their moist skin while submerged. An active frog may need to surface relatively soon, while a cold, inactive aquatic frog can remain underwater far longer if the water contains enough dissolved oxygen. Some frogs can even overwinter underwater for extended periods using cutaneous respiration, while other species rely heavily on lungs and must surface regularly.
So the safest answer is: frogs can stay underwater anywhere from minutes to very long periods depending on species, temperature, activity and oxygen levels—but they are not simply holding one lungful of air the entire time.
How Long Can Frogs Stay Underwater?
| Situation | What usually happens |
|---|---|
| Active land or semi-aquatic frog | Usually surfaces regularly because activity raises oxygen demand |
| Aquatic frog | May remain submerged for long periods, but many species still surface to breathe with lungs |
| Cold, inactive frog | Can remain submerged much longer because metabolism slows |
| Overwintering aquatic frog | Some species can remain underwater for extended winter periods if dissolved oxygen is sufficient |
| Warm or oxygen-poor water | Submersion time is reduced because oxygen demand rises while available oxygen may fall |
A submerged frog is not necessarily holding its breath in the human sense; oxygen can also pass through its moist skin.
Do Frogs Actually Hold Their Breath?
Yes, frogs can temporarily stop ventilating their lungs, but describing a submerged frog as simply “holding its breath” misses an important part of amphibian biology.
Adult frogs can exchange gases through several surfaces:
Lungs: important for breathing air, especially during activity.
Skin: oxygen and carbon dioxide can diffuse across moist, well-supplied skin.
Buccopharyngeal lining: the moist surfaces of the mouth and throat can also participate in gas exchange.
The relative importance of each route differs between species and situations. A frog resting in cold water may depend much more on its skin than the same frog would while actively moving on land.
That is why there is no scientifically useful universal answer such as “all frogs can hold their breath for three hours.”
How Do Frogs Breathe Underwater?
The main underwater mechanism in many adult frogs is cutaneous respiration—gas exchange through the skin.
Frog skin is thin, moist and supplied with blood vessels close to the surface. When the surrounding water contains dissolved oxygen, oxygen can diffuse across the skin into the blood while carbon dioxide diffuses outward.
This process works best when:
the skin remains healthy and moist
the water contains adequate dissolved oxygen
the frog is relatively inactive
metabolic demand is low
water temperature is suitable for the species
The old version of this page described frogs as pumping oxygenated water across the mouth in the same way a fish moves water over gills. That is not a good general description of adult frog respiration. Adult frogs usually ventilate lungs with a buccal-pumping mechanism when breathing air, while underwater gas exchange depends heavily on the skin in species that are capable of remaining submerged for long periods.
Why Temperature Changes Submersion Time
Frogs are ectothermic animals, so their metabolic rate changes strongly with environmental temperature. In colder conditions, body processes slow and the animal needs less oxygen.
This is one reason some frogs can remain underwater much longer in winter than they could while actively swimming in warm summer water.
Cold water can also hold more dissolved oxygen than warm water. Together, lower metabolic demand and higher oxygen availability can make cutaneous respiration much more effective during winter dormancy.
For more on ectothermy, see 35 Cold-Blooded Animals.
Does Activity Make Frogs Surface Faster?
Yes. A resting frog uses less oxygen than a frog that is swimming, escaping a predator, feeding or calling.
When activity increases, skin respiration alone may not provide enough oxygen for the frog's metabolic needs. The animal then depends more heavily on lung ventilation and may surface more frequently.
This is another reason laboratory “maximum underwater time” figures can be misleading. A motionless frog in cold, oxygen-rich water is physiologically very different from an active frog in warm water.
Can Frogs Breathe Through Their Skin?
Yes. Cutaneous respiration is one of the defining physiological features of amphibians. It is possible because their skin remains permeable rather than becoming heavily waterproof like the skin of many reptiles.
This also explains why healthy skin is so important to frogs. Skin disease, pollutants, dehydration and poor water quality can interfere with normal gas and water exchange.
Explore more species in the Amphibia section.
Do All Frogs Breathe Underwater Equally Well?
No. Frogs vary enormously in how much they depend on lungs versus skin.
A useful example is the African clawed frog (Xenopus laevis). It is almost completely aquatic, but Animal Diversity Web notes that it spends most of its time underwater and comes to the surface to breathe. Its respiration is described as predominantly pulmonary, with relatively little cutaneous respiration.
This is important because the old version of this article listed the African clawed frog as though it were simply a champion breath-holder. In reality, being highly aquatic does not automatically mean a frog obtains all of its oxygen underwater.
Can African Clawed Frogs Stay Underwater Forever?
No. African clawed frogs are strongly aquatic but still rely heavily on lungs. They normally surface for air.
The University of Michigan's Animal Diversity Web describes Xenopus laevis as almost totally aquatic and an excellent swimmer, but also states that it comes to the surface to breathe and that lung respiration predominates.
So an African clawed frog should not be used as proof that aquatic frogs can remain submerged indefinitely without breathing atmospheric air.
What About Wood Frogs?
Wood frogs (Lithobates sylvaticus) are another species that is often misrepresented in “frog breath-holding” lists.
Wood frogs breed in water, but they are mainly terrestrial outside the breeding season. Animal Diversity Web notes that they seek terrestrial locations for hibernation rather than spending winter as fully submerged pond frogs.
The remarkable adaptation of the wood frog is not extreme underwater breath-holding. Instead, part of its body can freeze during winter dormancy. During freezing, breathing, circulation and heartbeat can temporarily stop, with glucose and other physiological adaptations helping protect tissues.
Therefore the old page's claim that wood frogs have a normal underwater limit of “15–25 minutes” is not a useful description of what makes this species unusual.
Can Frogs Stay Underwater All Winter?
Some aquatic or semi-aquatic frogs can spend extended winter periods underwater, but this does not apply to every frog species.
During cold-weather dormancy:
metabolism falls sharply
oxygen demand declines
movement becomes minimal
cutaneous respiration can supply a larger share of oxygen needs
They still need access to oxygen. A frog overwintering underwater is generally better able to survive in water where dissolved oxygen remains available than in a completely oxygen-depleted environment.
Other frogs use completely different winter strategies. Wood frogs, for example, overwinter terrestrially and tolerate freezing.
Can Frogs Drown?
Yes. The ability to absorb oxygen through the skin does not make every frog immune to drowning.
A frog can run into trouble if:
the species relies strongly on lung breathing and cannot reach the surface
water has very low dissolved oxygen
the frog is trapped or exhausted
temperature or activity raises oxygen demand
skin function is impaired
Even highly aquatic frogs need conditions suited to their respiratory biology. “Frogs can breathe through their skin” should never be interpreted as “frogs cannot drown.”
Can Frogs Sleep Underwater?
Some aquatic and semi-aquatic frogs can rest underwater for extended periods. Whether this is described as “sleep” depends on the species and how sleep is defined behaviorally.
What matters for respiration is that a resting frog has a lower oxygen requirement than an actively swimming frog. This can allow longer periods between lung breaths or greater dependence on cutaneous gas exchange.
Do Tadpoles Breathe Differently?
Yes. Most frog larvae begin life with gills and are far more fish-like in their respiratory system than adult frogs.
As metamorphosis progresses, lungs develop and the respiratory system changes. Adult frogs typically depend on lungs, skin and the buccopharyngeal surface in proportions that vary by species.
This means the question “how long can a frog stay underwater?” also depends on life stage. A tadpole and an adult of the same species may use very different respiratory strategies.
Why the Old “Breath-Holding Records” Were Misleading
The previous article gave precise figures such as 210 minutes for African clawed frogs, 15–25 minutes for wood frogs and 300 minutes for leopard frogs near freezing. It also concluded that some frogs could “hold their breath for an entire day.”
Those numbers create a false sense of precision because several different processes were being mixed together:
lung breath-holding
cutaneous respiration
winter dormancy
aestivation on land
species with very different dependence on lungs
A frog remaining submerged for hours while exchanging oxygen through its skin is not physiologically equivalent to a mammal holding one breath for hours.
Aestivation Is Not Underwater Breath-Holding
Some frogs from seasonally dry environments can remain dormant underground during drought. This is called aestivation.
Aestivating frogs reduce metabolism, conserve water and remain inactive until environmental conditions improve. They may survive underground for very long periods, but that does not mean they are holding their breath underwater.
The old page mixed Australian desert-frog dormancy into its underwater breath-holding section. These are different adaptations and should not be treated as the same record.
For another specialized terrestrial frog, see Desert Rain Frog.
Surinam Toads Are Not a Breath-Holding Record Example
The Surinam toad is famous for reproduction in which developing young are embedded in the female's back. That unusual reproductive system is fascinating, but it does not demonstrate extraordinary underwater breath-holding.
The old page placed Surinam toads under “record-holding amphibians” and connected their reproduction with survival in arid environments. That was unrelated to the question and has been removed from the updated explanation.
What Determines How Long a Frog Can Stay Underwater?
| Factor | Effect |
|---|---|
| Species | Different frogs rely on lungs and skin to different degrees |
| Water temperature | Cold generally lowers metabolic oxygen demand |
| Dissolved oxygen | More oxygen in the water supports cutaneous respiration |
| Activity | Swimming and struggling increase oxygen demand |
| Body size and physiology | Surface area, metabolism and respiratory anatomy affect gas exchange |
| Season | Dormant winter frogs may remain submerged much longer than active summer frogs |
| Life stage | Tadpoles and adults use different respiratory systems |
Frequently Asked Questions
How long can a frog hold its breath?
There is no universal time. Depending on species and conditions, a frog may stay underwater from a relatively short period to many hours or much longer during cold dormancy. Much of that time may be supported by oxygen absorbed through the skin rather than by holding one lungful of air.
How long can frogs stay underwater?
It varies greatly. Active frogs generally need to surface sooner, while cold, inactive frogs in oxygen-rich water can remain submerged much longer. Some species overwinter underwater for extended periods.
Can frogs breathe underwater?
Many adult frogs can absorb dissolved oxygen through their moist skin while underwater. The importance of this cutaneous respiration differs between species.
Can frogs drown?
Yes. Frogs can drown if they cannot meet their oxygen needs, especially species that depend strongly on lung breathing or frogs trapped in poorly oxygenated water.
Do frogs have lungs?
Adult frogs generally have lungs. They ventilate them using movements of the mouth and throat rather than a diaphragm like mammals have.
Do frogs breathe through their skin?
Yes. Gas can diffuse across the thin, moist skin into and out of blood vessels near the surface.
Can an African clawed frog breathe underwater?
Some gas exchange can occur through the body surfaces, but African clawed frogs rely heavily on lungs and normally come to the surface to breathe.
Do wood frogs hibernate underwater?
Wood frogs generally overwinter in terrestrial locations. Their famous winter adaptation is freeze tolerance, not remaining submerged beneath pond ice.
Can frogs stay underwater all day?
Some frogs can under suitable conditions, but this is not a rule for all species. Water temperature, oxygen, activity and respiratory physiology determine whether long submersion is possible.
Do tadpoles breathe underwater?
Yes. Most frog tadpoles use gills during the larval stage. Their respiratory system changes during metamorphosis as lungs develop.
Reference Sources
University of Michigan Animal Diversity Web — African Clawed Frog (Xenopus laevis)
University of Michigan Animal Diversity Web — Wood Frog (Lithobates sylvaticus)
Final Takeaway
Asking how long frogs can hold their breath is useful, but the best answer is not a stopwatch number. Frogs combine lung breathing with gas exchange through the skin, and the balance changes with species, temperature, activity and oxygen availability. Some surface frequently, some remain underwater for long periods, and some can overwinter submerged. The key fact is that a frog underwater may still be breathing through its skin rather than simply holding its breath.
