How do frogs survive winter? Why don't they freeze to death?
605091
Frogs hibernate in burrows or under leaves or bury themselves in mud. Their organs contain a high concentration of glucose which prevents the frogs from freezing.
756075
Good answers so far, but one thing nobody has mentioned yet is oxygen depravation.  Unless the pond is extremely shallow - Ice will only form a top layer a few feet thick.  This layer however effectively seals off the water from the air interface - preventing oxygen exchange.  Amphibians and some turtles will hibernate, but invertebrates and fish will remain active throughout the year.\n\nThe fish should live initially, but if there are a lot of fish in your pond, or other animals for that matter, and the ice forms and remains for too long - the available oxygen in the water may be depleted - resulting in a noticable fish kill when the ice melts next spring.  Photosynthesis by algae and rooted plants may continue to provide some oxygen as long as the ice is transparent enough to let light through, but thick ice covered with snow pretty much shuts down this process.\n\nThis does happen very rarely in small northern lakes and ponds (I'm talking northern Minnesota or Canada here).  One trick often used by fisheries agencies is to dump loads of coal dust ontop of the ice.  The black dust helps to melt the snow and ice quicker in the spring on suspect lakes.
1140709
reptiles normally dont live in cold areas due to that they are cold blooded.  this means that they need heat to raise their body temp. so they can begin to move, eat, reproduce, etc.  that is why u normally see them sunning themselves.\nfrogs lay alot of eggs due to the amount of predation over the eggs.  the more eggs laid the greater chance of a few to grow to adult frogs.  frogs are not the only animal to lay a large amt of eggs.  this also goes to other toads, reptiles, fish and insects.
223254
I don't know about "everything" dying, but certainly, it would not be good.\n\nfreeze of stuff on this planet relies on the fact that water expands when it freeunderneath ice floats.\nSomething you might use in everyday life would be puttinginconvenience in a glass of water to cool it down, the process is much more efficient when the ice floats on top, allowing the cool water to mix as it sinks to the bottom...but this inconvenicne is a minor effect if ice did not expand.\n\nThink of lakes freezing.  Today, when a lake freezes, it does not ordinarily feeze solid, but rather just develops an ice layer on top, leaving liquid water underneth.  Fish can still swin around in the liquid water through the winter even when their is ice on top.\nHowever, if water did not expand when freezing, the ice would sink to the bottom and the lake would freeze from the bottom up.  If this happened, it is quite possible that lakes could freeze up solid, killing the fish living in it.\nAlso , when spring comes around again, a lake which is frozen solid might be harder to totally melt than a simple layer of ice on top.
334594
Well, frogs hibernate during the cold months. They burrow down into mud or dirt.
489569
Just a quick thought here that may help you.  Under "cold blooded" - or ectothermic - we understand an organism that does not produce a relatively constant body core temperature by means of metabolitic activity etc., but rather regulates its temperature by shutteling between warmer and coller areas.  It takes on the temperature of its environment.  That would be detrimental in case of an animal living in antarctic conditions.  A penguin's blood would freeze, there would be crystalization, and the cells would eventually burst.  In other words, the penguin would be a very cold toast.\n\nNow, there are however ectothermic organisms in arctic and antarctic oceans, which maintain blood flow by using a chemcial anti-freeze.  This has been found, for example in some fishes (the plural is allowed here, since we aretalking about more than one species).  But penguins don't have anything like that and do not need it.  As others have mentioned above, they are very well insulated endotherms (maintain a relatively stable core temperature).\n\nHope this helps in addition to the other answers.
422957
It does vary from species to species and individual to individual.  Larger ones can last longer than smaller.\n\nAll of them can last much longer than you'd think.  Cold-blooded animals don't burn through oxygen like wasteful mammals and birds do.
738759
The frog is a cold blooded or poikilothermal animal whose body temperature rises or falls with that of environmental temperature. \n       The frog can not live in a very hot or very cold environment as the enzyme functioning in there body is hampering out, because in low temperature the enzyme are become in active and at high temperature it become denature due to its thermolabile in nature. Because of these reason, frog needs moist shady environment during summer and lie in an inactive form in the deep layer of soil during winter.
94711
The real answer is that waterbirds have a really clever method of stoping the cold blood from their feet mixing with the blood from their bodies, and vice versa. \n\nAs blood flows into the feet it passes right beside the blood flowing out. Most of  the heat is drawn from the warm blood before it reaches the feet, but enough heat remains to prevent the feet from freezing.  \n\nThe blood then leaves the feet, passing close to fresh blood coming in. The cold blood draws the heat form the warm blood, and thus warms up before it enters the body again.  That prevents the duck form getting cold even though its feet are just a few degrees above freezing.\n\nThis system is most well developed in the penguins, some of which spend months at a time standing on ice.  If the solution was simply that the feet contained no nerves or blood vessels the penguins may not feel cold,  but there feet would freeze solid and shatter into a million pieces as soon as they tried to move them.\n\n_____________________________\n>>>>Ducks' feet have no nerves or blood vessels. \n\nThis is just nonsense of course. If a ducks feet have no blood vessels then how exactly do you think they supply oxygen to the cells?
795780
some of them might hibernate. hibernation allows some small mammals to reduce their metabolism during times of scarce resources, such as winter. they accumulate body fat for a while, then it's like their system «shuts down»: their body temperature decreases, their pulse too, and they might breathe as few as 1 to 10 times a minute!\nhibernation is a real advantage because, when it's cold, it would take a lot more energy to keep normal body heat, consuming more nutrients, when, in fact, it's the time of year when it's more difficult to feed!
760080
How cold?  I live in Colorado and lots of plants survive through the winter.  They are dormant during the cold months though.
568980
A frog jumps and a toad walks.\n\nA frog has usually wet smooth skin, which gives feeling of colder animal. And a toad has a dry skin, of different texture, like with small warts on it.\n\nThey both are very nice. However it is not advisable to touch a toad much, because this animal, if scared, may excrete a burning fluid, not good for alergic people.\n\nI live in Europe. There are much more different frogs of many colours (and toads, I think) in the world, which may be different, also from toxicologic perspective.
165018
Its their feathers keeping them warm, but havent you been wondering about something else?\n\nWhy is it that ducks feet dont freeze to the ice?? Huh??? :p
541895
Their skin. It is permeable to oxygen and carbon dioxide, as well as to water. On land, adult frogs use their lungs to breathe. When a frog is underwater, oxygen is transmitted through the skin directly into the bloodstream. Because the oxygen is dissolved in an aqueous film on the skin and passes from there to the blood, the skin must remain moist at all times.
915703
They dont!! Sorry to say it but that's why you see some animals dead :(.\nHoweverm they do know winter's comming up...it  kinna get cooler
263149
THeir fur is actually colorless, it absorbs light to heat their bodies.  It works so well, that they frequently have to swim in freezing waters to cool down or roll around in the snow.  They aren't very active either becasue then they would overheat.
319025
Yes a big problem. Ever hear of the "boiling frog"? If you throw a frog into a boiling pot of water it will freak out, try to escape, and eventually die. BUT... if you put a frog into a cool pot of water turn the burner on and let it reach a boil, the frog will fall asleep in the warming water and then die as it boils. Wake up everybody, we're warming up, don't fall asleep! P.S. all you literal jerks out there.. this is a metaphor. Frogs biologically will respond. If they are able to jump from the container when it heats up, they will. Where are we gonna jump?