How do animals  know how cold it is going to be in the winter?
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
506079
It's too cold for them up north. We get all the birds down here, in the Winter time. Actually we have birds all year round. Just different ones in the Winter.
990084
Well, it depends.  Are you talking ground temperature, air temperature, cloud temp.?  The ground temp doesn't have to be below freezing.  However, the temp in the clouds has to be.  This temp is often colder than ground temp, which means that snow will form even when the ground temp is above freezing.  If the snow isn't warmed much on the way down, it will still be snow when it gets to the ground.  Typically, according to Wikipedia.org, snow will fall at temps of 35-40 degrees F. and below.\n\nA good counter-example would be sleet, which is snow that has partially thawed on its descent to the earth.  Another good counter-example would be to tell the person to pay attention to the temp the next time it snows.  I live in Indiana, and we get snow all the time with temps around 40 degrees F.  It's not uncommon at all.
25339
Air temperature may be several degrees warmer than ice surface temperature. Light, including infrared or warmth, is reflected from white surfaces.\n\nThe surface of the ice will melt, slowly, during the day, but it will freeze again over night. That's one of the reasons why a snow field slowly turns into ice.
380086
there are many strategies used by animals even tiny ones to survive the winter-having thick fur or an underlayer of downy feathers prevents heat loss which is the biggest problem we have in surviving the cold (you don't get frost bite on your head). bulking up in the fall ensures fat reserves to keep the body warm (most of the food eaten by mammals is  exclusiely to generate our own heat.) Also finding shelter from really cold and windy nights by grouping together for body warmth.\nSome animals like small rodents live beneath the snow where the temperature hovers around the freezing point even though it might be 20 below freezing (the subnivean zone), etc.  the biggest factor is insulation with incredibly thick fur.
890268
They become excited and expand.  They contract when cold.  See: Standard Temperature and pressure to learn more about what controls gases.
223973
They are less active in winter but they don't migrate. It was just looking for a place to rest for a minute that offered a little shelter from the weather.
144708
It is very difficult for the male since it is so cold out when they mate but when they do it they go penguin style not to be confused with doggie style
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?
666162
It’s cold there. You can burn it to make warmth.
984363
Animals sense things alot better than humans do.
713374
it can never be too cold to snow, as long as you have moisture.  I have had snow where I live at 38 degrees F.  Some people think the temp has to be at 32 or below for snow but it can snow at 35 to 40 degree F, but nothing higher.  As long as you have very cold air in the upper atmosphere, and the snow is heavy enough, then the snow does not have time to turn to rain, so you get snow.
332808
Living micro-organisms have been found flourishing deep within the ice of Antarctica. Since ice freezes at 32 degrees Fahrenheit, I expect that's as cold as you can get and still allow the little beggars to move about, ingest nourishment and procreate. These are simple single-celled animals. Microbia.
909696
The warm front is moving into colder air. The moisture at the leading edge of the front freezes when it hits the cold air causing snow. As the front moves through, the warm air is increasingly higher in altitude which causes the falling moisture to warm up in the form of sleet then freezing rain then rain.\n\nHope this helps!
719256
Good question.  Maybe they never get cold, but then again, they are always that pasty gray color so who knows.  Now you have me curious.  I'll ask the next one I see.
907577
They measure temperature with a thermometer.\nThey measure wind speed with an anemometer.\nThey measure humidity with a hygrometer.\nThey measure the salinity with a salinometer.\nThey measure the activation with a acuator.\n\nThen they get the weather on a computer from the National Weather Service.
953744
They fatten themselves up in summer/autumn. They may grow thicker fur but the most common coping mechanism is hibernation in a sheltered location where they are not exposed to the elements.