Cravings and aversions to certain foods are probably the result of altered taste and smell sensitivities induced by

Hormones

Explanation:

According to my research on neurological studies, I can say that based on the information provided within the question the this is induced by a persons hormones. Hormones are defined formally as a "regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action."

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answer; (c); /out to the side and directly under the dogs neck.