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  2. Sleep in animals - Wikipedia

    en.wikipedia.org/wiki/Sleep_in_animals

    Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...

  3. Hibernation - Wikipedia

    en.wikipedia.org/wiki/Hibernation

    This is true for all clades of animals that undergo winter dormancy; the more prominent the seasons are, the longer the dormant period tends to be on average. Hibernation of endothermic animals has likely evolved multiple times, at least once in mammals—though it is debated whether or not it evolved more than once in mammals—and at least ...

  4. List of nocturnal animals - Wikipedia

    en.wikipedia.org/wiki/List_of_nocturnal_animals

    Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night.

  5. 3 Winter Sleep Problems & How to Fix Them - AOL

    www.aol.com/3-winter-sleep-problems-fix...

    Seasonal Affective Disorder (SAD) is more common in winter due to the lack of sunlight, causing sleep disturbances. Dry air in winter can lead to discomfort and increased risk of illness. 3 Winter ...

  6. What happens at Binder Park Zoo during the winter? - AOL

    www.aol.com/happens-binder-park-zoo-during...

    During the winter season, the zookeeping team provides routine care while adapting to the needs of several species. All animals remain on-site throughout the year in their various homes.

  7. Crepuscular animal - Wikipedia

    en.wikipedia.org/wiki/Crepuscular_animal

    Some crepuscular animals may also be active by moonlight or during an overcast day. Matutinal animals are active only after dawn, and vespertine only before dusk. A number of factors affect the time of day an animal is active. Predators hunt when their prey is available, and prey try to avoid the times when their principal predators are at large.

  8. 'Move, change or die': How these animals adapt and survive ...

    www.aol.com/move-change-die-animals-adapt...

    Sleeping the season away. If an animal’s physiology, diet, or other characteristics don’t allow it to stay warm and/or find sufficient food during the winter, an additional set of survival ...

  9. Winter rest - Wikipedia

    en.wikipedia.org/wiki/Winter_rest

    Winter rest (from the German term Winterruhe) is a state of reduced activity of plants and warm-blooded animals living in extratropical regions of the world during the more hostile environmental conditions of winter. In this state, they save energy during cold weather while they have limited access to food sources.