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Dogs have a natural instinct to chase smaller animals that flee, an instinct also common among cats. [4] Most cats flee from a dog, while others take actions such as hissing, arching their backs and swiping at the dog. [4] After being scratched or bitten by a cat, most dogs will become fearful of cats. [5]
Vitamins, minerals, fiber, and water do not provide energy, but are required for other reasons. A third class dietary material, fiber (i.e., non-digestible material such as cellulose), seems also to be required, for both mechanical and biochemical reasons, though the exact reasons remain unclear.
Osmoregulation is the active regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution which in this case is represented by body fluid) to keep the body fluids from becoming too diluted or concentrated.
[7]: 4 A 2007 report stated that about 37 million US households owned cats, with an average of 2.2 cats per household giving a total population of around 82 million; in contrast, there are about 72 million pet dogs in that country. [8] Cats exceeded dogs in number as pets in the United States in 1985 for the first time, in part because the ...
Interestingly, domestic dogs and cats are practically incapable of vitamin D synthesis due to high activity of 7-dehydrocholesterol reductase, which converts any 7-dehydrocholesterol in the skin to cholesterol before it can be UVB light modified, but instead get vitamin D from diet. [192]
Many nutrients can cause a variety of deficiency symptoms in cats, and the skin is a vital organ that is susceptible to dietary changes in minerals, protein, fatty acids, and vitamins A and B. [75] [76] [77] Cats show dietary inadequacies in their skin through excess or inadequate oil production, and skin toughening. This results in dandruff ...
Also, vitamin D is an essential vitamin because cats cannot convert it from precursors in the skin. [24] Water-soluble vitamins. Cats can synthesize niacin, but their breakdown exceeds the rate that it can be synthesized and thus, have a higher need for it, which can be fulfilled through an animal-based diet. [24]
Choline is a water-soluble nutrient that prevents and improves epilepsy and cognitive disorders. [21] Supplementation is part of therapy for cats with seizures and kitty Alzheimer's , despite this treatment being mostly based on anecdotal evidence and research done on dogs. [ 22 ]