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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 ...
The cougar (Puma concolor) (/ ˈ k uː ɡ ər /, KOO-gər), also known as the panther, mountain lion, catamount and puma, is a large cat native to the Americas. It inhabits North, Central and South America, making it the most widely distributed wild, terrestrial mammal in the Western Hemisphere, and one of the most widespread in the world.
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. Matutinal, a classification of organisms that are only or primarily active in the pre-dawn hours or early night.
Mountain lions in the greater Los Angeles region are consciously shifting their activity to avoid interacting with human residents, a new study has found. Big cats living in areas with higher ...
These rare big cat sightings are sparking concern and awe in neighborhoods.
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Puma (/ ˈ p j uː m ə / or / ˈ p uː m ə /) is a genus in the family Felidae whose only extant species is the cougar (also known as the puma, mountain lion, and panther, [2] among other names), and may also include several poorly known Old World fossil representatives (for example, Puma pardoides, or Owen's panther, a large, cougar-like cat of Eurasia's Pliocene).
In zoology, a crepuscular animal is one that is active primarily during the twilight period, [1] being matutinal, vespertine/vespertinal, or both. This is distinguished from diurnal and nocturnal behavior, where an animal is active during the hours of daytime and of night, respectively.