The unusual water balance in camelids is characterized by a low level of evaporation and greatly delayed dehydration, enabling them to consume dry food for long periods. Camelids usually take water only once or twice a week but in large amounts, up to 70 kg. They can safely survive a water loss equivalent to 40% of their body weight. Their erythrocytes, being highly elastic, can continue circulating under increased blood viscosity. Their kidneys are capable of markedly concentrating their urine to reduce water loss. They can also extract water from their fecal pellets.
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