Search results
Results from the WOW.Com Content Network
A sleeping Arctic fox with its tail wrapped around itself and over its face. Arctic foxes must endure a temperature difference of up to 90–100 °C (160–180 °F) between the external environment and their internal core temperature. [16]
Textile with white fox (Daniel Kohavi, 2016) Arctic fox pelt. Arctic fox fur is a type of fur obtained from the arctic fox (also known as the polar fox) and turned into a commodity. The arctic fox is zoologically divided into two color varieties, the white fox and the blue fox, whose fur is also a commodity as blue fox fur. The white fox, the ...
The pre-flight warm-up behavior of a moth. Insect thermoregulation is the process whereby insects maintain body temperatures within certain boundaries.Insects have traditionally been considered as poikilotherms (animals in which body temperature is variable and dependent on ambient temperature) as opposed to being homeothermic (animals that maintain a stable internal body temperature ...
Juvenile red foxes are known as kits. Males are called tods or dogs, females are called vixens, and young are known as cubs or kits. [14] Although the Arctic fox has a small native population in northern Scandinavia, and while the corsac fox's range extends into European Russia, the red fox is the only fox native to Western Europe, and so is simply called "the fox" in colloquial British English.
The fox has even helped herself to a good, cozy night’s sleep in the woman’s bed Image credits: lilly.edith.creat Foxes aren’t a new phenomenon in London, Time Out reported last year.
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 diurnal Arctic ground squirrel lives on the tundra, where it may fall prey to the Arctic and the red fox, wolverine, Canada and Eurasian lynx, brown bear, snowy owls and eagles. It is one of the few Arctic mammal species which hibernates in the winter, similarly to the little brown bat and the closely-related marmot. [13]
In 1847, Carl Bergmann published his observations that endothermic body size (i.e. mammals) increased with increasing latitude, commonly known as Bergmann's rule. [9] His rule postulated that selection favored within species individuals with larger body sizes in cooler temperatures because the total heat loss would be diminished through lower surface area to volume ratios. [8]