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 The French veterinarian Ferand Mery famously said, “God made the cat in order that man might have the pleasure of caressing a tiger”. While the domestic cat cannot claim the venerable tiger as an ancestor, it is true that our cuddly feline companions are believed to have descended from felis sylvestris lybica, the African wildcat. Also known as “the desert cat”, this feline is a desert-dwelling species that inhabits harsh environments notable for their lack of food and even less water. To survive, the African wildcat can shed nearly all of her reserves of fat and protein, up to 40% of her weight! But even this highly adapted animal is much less tolerant to dehydration. And yet, it continues to thrive in desert climates without easy access to water.
Water is the single most vital component necessary to sustain the normal functioning of all living cells. Water has many functions: it eliminates waste, lubricates tissues, regulates body temperature, cushions joints and internal organs, aids in digestion, and much more.
In the wild, cats tend to eat small game characterized as high-protein and high-moisture content, such as rabbits, birds and rodents (even some juicy insects). Prey animals like these contain about 70% water, providing most of the moisture that wild cats need. Unsurprisingly, wild cats have failed to evolve a strong "thirst reflex" like that of dogs and humans. A thirst reflex involves complex interactions between the kidney and the brain. When we are dehydrated, the kidney releases chemicals that communicate with the brain, which in turn makes us consciously aware that we are thirsty and need to drink. More... |