Well, adult crickets (male or female) will eat both the eggs and hatched nymphs, that’s why cricket farmers generally move their breeding soils (which are full of cricket eggs) to another container before the eggs hatch.
Crickets…hmmm…feed both night and day…though they generally eat vegetable matter, they are known to eat each other (this is the reason cricket farmers make certain their colonies have lots of food and water) so they could be consider carniverous…though male crickets are known for their mating song, they don’t sing while eating so “feeds silently”? Hmmm…probably not the idea that Marigold was thinking of but it could work.
My implication is that “puppy dog eyes” are useually wide open so one looks like a begging puppy. This is often seen as cute, or at least attempting to look cute. “Bedroom eyes” are partially closed, as Ms. Mudd is showing in the third panel, this implies romantic interest.
If I recall correctly, Marigold never used the word “hunts”, she said “feeds”.