About Desert Animals
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Avoiding Heat:
- Crepuscular activity - active morning and evening - one reason, humans seldom encounter rattlesnakes and Gila Monsters
- Completely nocturnal (Bats, snakes, rodents foxes and skunks)
- Seasonal migration or soaring to higher elevations
- Use of shade and burrows or dens during the heat of the day
- Estivation dormancy during periods of heat and dryness
Dissipating heat:
- Open-mouthed gaping to exhaust body heat
- Long appendages and enormous ears that act like the radiator of a car
- Lighter coloration, which reflects heat and acts as camouflage in desert surroundings
- Urohydrosis - excreting feces on the legs, where evaporation cools the rest of the body (birds)
Retaining water:
- Burrowing into moist soil where water is absorbed through the skin
- Obtaining their moisture needs from the food they eat
- Excreting metabolic wastes in the form of uric acid to conserve water
Acquiring water:
- Deriving water directly from plants, particularly succulents, such as cactus
- Living in sealed underground dens to recycle moisture from their own breathing
- Specialized kidneys that extract water from their urine
- Specialized organs that recapture exhaled moisture in the nasal cavities
- Manufacturing water metabolically from digestion of dry food items








