摘要：A squirrel monkey, if it needs a particular dietary component because of a metabolic dísorder or because that food has been cxcluded from itl dieto will develop a specíñc hungerfor the food. In CllIeI where specific hungers show up clearly, four behaviors can be demonstrated: (1) Tbe monkey prefers the food it needs to other foods that are available; (2) It usually íngests large enough amounts to meet its apecific physiological requírements; (S) It eats the needed food even while its Itomach ís fun; (4) When vitamin B2 is removed from its dieto a monkey will exhibit digestive dísturbance, general weakness. a lack of vigor. and 1011II of weight
