773 bytes added
, 14:12, 14 February 2011
====Causes====
* '''Decreased intake'''.
** The animal is disinclined or unabled to drink.
** May be due to general debility or because of obstruction to the mouth/throuat by disease lesions.
* '''Deprivation of water'''.
** Animal loses access to its water supply.
* '''Increased uncontrolled physiological loss'''
** For example, due to hyperventilation, excessive sweating, or polyuria due to renal disease.
====Effects====
* Electrolytes are not depleted, although water is.
** There is therefore an increase in osmolality of the extracellular fluid.
*** Intracellular water is transferred to ECF, resulting in cellular dehydration results.
**** Causes cell death.
* Cellular dehydration particularly affects the CNS and heart.
[[Category:Vascular Fluid Balance]]