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Although young growing dogs have immature gastrointestinal tracts, they do contain microflora which can ferment fibre and generate short chain fatty acids beneficial to gut health. [ 22 ] [ 23 ] Colonization and establishment of these bacterial populations happens over time, beginning immediately after birth. [ 24 ]
The requirements and functions of nutrients in dogs are largely similar to those in cats, with many requirements relaxed: The requirement of arginine in the urea cycle is reduced, as dogs have a functional pyrroline-5-carboxylate synthase. [99] Dogs have a functional delta 6 desaturase, hence no specific need for arachidonic acid. [71]
Dogs get ample correct nutrition from their natural, normal diet; wild and feral dogs can usually get all the nutrients needed from a diet of whole prey and raw meat. In addition, a human diet is not ideal for a dog: the concept of a "balanced" diet for a facultative carnivore like a dog is not the same as in an omnivorous human.
This dietary advice for dogs resembles that for humans on balanced vegan diets, where it is also important to ensure inclusion of essential nutrients, such as calcium, iron, iodine, and selenium and vitamin B12 and vitamin D, possibly in the form of supplements, especially in pregnancy and early life stages. [5]
"Dogs do have full control of their tails; it is a highly specialized part of the body," says Dr. MacMillan. "They can control whether it is raised or lowered, as well as side-to-side movement.
This entry measures the weight of inorganic material left over after the food is burned for two hours at 600 °C. Thus, it does not include water, fibre, and nutrients that provide calories, but it does include some nutrients, such as minerals [6] Too much ash may contribute to feline urological syndrome in domestic cats. [7]