What Happened to Rabbit?

 JN, Harvest vignette, 1939. From book 'Men and the Fields'. Line drawing.

JN, The Flooded Meadow, undated (before 1954; late 1940s or early 1950s). Oil on canvas. JN, Harvesting, 1947. Lithograph.

In 1939 John Nash (JN) drew 1 man with a stick and two dogs chasing a rabbit. In 1947 two dogs are chasing the rabbit at the same place. And the man with the stick? He is chasing with a new dog - dog number three - in another corner of the field. Chasing what? What happened to the rabbit?

Or is the man lying on the ground with his square shape hat in front of him? If so, why has he changed from a proactive to a passive attitude? 

Question mark? Note that the piece of grain to be cut changes shape. From indefinable in 1939 to an almost question mark in 1947. Is there a question asked somewhere? At which?