She is no reaper that sleeps out the noontide; at all times she is reaping and cutting down, as well the dry grass as the green; she never seems to chew, but bolts and swallows all that is put before her, for she has a canine appetite
that is never satisfied; and though she has no belly, she shows she has a dropsy and is athirst to drink the lives of all that live, as one would drink a jug of cold water."
A canine appetite
for knowledge was generated, which must still be fed but was never satisfied, and this knowledge, not being directed on action, never took the character of substantial, humane truth, blessing those whom it entered.
It is allowed, that senates and great councils are often troubled with redundant, ebullient, and other peccant humours; with many diseases of the head, and more of the heart; with strong convulsions, with grievous contractions of the nerves and sinews in both hands, but especially the right; with spleen, flatus, vertigos, and deliriums; with scrofulous tumours, full of fetid purulent matter; with sour frothy ructations: with canine appetites
, and crudeness of digestion, besides many others, needless to mention.
Scent plays a huge role in canine appetite
, so if your dog can't smell her food, she may not want to eat.