Actually, dead frog was my first guess...then, maybe some twisted parody of Michelangelo's Creation of Adam! (Where dead white frog is reaching out to touch a splotch of somethingon the far left)
Fresh, washed greens which nevertheless harbor a frog...never has there been a more poignant image of psychoanalytic metapsychology.
Even the viewer sees the frog in the greens, but cannot understand that which he sees.
He cannot come to terms with the Amphibious Within.