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Animals that hibernate, there are several and they do not all do it in the same way and with the same times. There is no sort of bell, like in school, that rings and warns them Animals that hibernate to go to bed, and not even a threshold temperature. Everyone does it by himself, or almost, and there are also those who don't care change of season and continues his business, indeed, maybe he is also happy with the "fresh".
Certainly he is not of this opinion the famous dormouse which by definition is the first among Animals that hibernate: sleeps up to 6 months allowing himself short and rare moments of wakefulness, obviously to have a snack, nothing tiring. Not very different is the situation for marmots, squirrels, hedgehogs and bears, in cold countries, then, animals that hibernate increase in number. They also add snakes, lizards, snails, turtles, toads, frogs, worms, butterflies and many insects.
Lethargy: what it is
Hibernation is a habit of all those animals that "do not have a body", not in general, the bear for example, has it all right, but we mean the body suitable for withstanding the intense cold. Faced with the cold temperatures of winter and sometimes even autumn, the Animals that hibernate to make sure they stay warm they should spend more energy than they would be able to get by eating. If things don't add up, before "fainting", hibernate.
The Animals that hibernate they are therefore not spoiled sleepers but living beings who are very attentive to their well-being, so much so that they automatically activate a real physiological change in order to be able to withstand a long period of fasting. How to do?
Animals that hibernate they often slip into a den they have already provided, and or do not eat for months, consuming fat reserves accumulated in the summer, or opening their eyes at times to make short snacks that help them get to the thaw.
More technically speaking, let's see what happens on average to the body of Animals that hibernate: breathing and blood pulsations, like other vital functions, slow down, body temperature drops even up to 10 degrees, the digestive system becomes inactive and sensitivity is reduced to a minimum. As for the duration, and the "date" of the start, do not follow any timetable, depends on the species and the external temperature.
Animals that hibernate in the fall
Among the first Animals that hibernate, in early autumn, remaining there for a long time, there are notoriously hedgehogs and dormice, especially the latter are quite punctual, they begin to disappear in October and reappear “Fresh and rested” in the month of roses, in May.
Not only that: their hibernation is continuous, complete with a blanket - the tail - and even in spring some abundant naps do not miss it. The Hedgehog, in turn, even in summer he sleeps for half a day, literally, twelve hours, which obviously become 24 in autumn and winter. Other animals that shamelessly hibernate in the fall are le marmots, in groups, and then add amphibians and reptiles who love the summer, salamanders and vipers in the first place.
Animals that hibernate in winter
There are also Animals that hibernate later, resisting the first cold and taking advantage of it to continue to stock up on food. This is how they behave ants, bears, turtles, squirrels, rodents, snails and bats that go into winter hibernation and not always 24 hours a day.
In fact, it may happen, only for some, that the hibernation regime is not as rigid as that of the dormouse, but rather a continuous and lazy falling asleep and waking up to feed. A alternating hibernation. Squirrels accumulate food in the summer and in winter they feast and sleep, even bears, both brown and polar, spend the cold season in a state that rather than lethargy it can be defined as numbness. In fact, the females of these animals can also find themselves giving birth and feed their puppies.
Animals that hibernate: coloring pages for research
While the Animals that hibernate they finish the last preparations, counting the days that separate them from the long sleep, we can learn who they are and how they are by coloring their portraits together with the little ones. Here are a few to start with.
Animals that do not hibernate
There are not a few animals that like not, must not, cannot or are not used to taking this long siesta. Man, like many living beings, remains alive and well, active and there are even those of us humans who can't wait for the cold weather to go skiing. Cat and dog they are the first that we can think of, but there are so many that a complete list would only be boring.
Here are those who do not miss even a minute of hibernation, in alphabetical order: bee, snake, beaver, snail, ladybug, hamster, moth, butterfly, ant, dormouse, earthworm, lizard, marmot, possum. Little worm, bear, bat, raccoon, skunk - fortunately - and then frog, hedgehog, toad, squirrel, snake, turtle, badger, mouse and, let's not forget that he takes his revenge, the Viper.
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