Salivate: be envious, desirous, eager for, or extremely happy about something; "She was salivating over the raise she anticipated"
Saliva spilling from the mouth
Drooling (also known as driveling, ptyalism, sialorrhea, or slobbering) is when saliva flows outside the mouth. Drooling is generally caused by excess production of saliva, inability to retain saliva within the mouth, or problems with swallowing.
Drools is a business rule management system (BRMS) with a forward chaining inference based rules engine, more correctly known as a production rule system, using an enhanced implementation of the Rete algorithm.
(Drooling) The extrudation or leakage of molten resin from a plasticator nozzle or nozzle sprue bushing area while filling or shooting the mold.
(Drooling) The way in which teething babies wash their chins.
Is what you do when your persons have food and you don't. To do this properly you must sit as close as you can and look sad and let the drool fall to the floor, or better yet, on their laps.