N.B. Ear tips and openings are coded separately.
As well, throughout this coding section, remember to use the surround function where appropriate. If your ability to observe any posture, such as ear tips or openings, is confounded by the wolf's movement, you may summarize the postures over a series of 10 frames (i.e. WIDTH = 10 frames) to determine the likely posture of the wolf.
E1. Are the ears positioned symmetrically? (see a below)