Am I crazy or are the cats pictured under the graph swapped? The cat under the "leftward" bar is curled the right and the cat under the "rightward" bar is curled to the left. Did they just decide that egocentrism in directions doesn't apply to cats?
They say 'leftward sleeping position would provide a fast left visual field', while showing a cat sleeping on its left side, with its right eye having the best view (left eye with a bad view).
Clearly, there is a contradiction. What's mystifying is that the authors seemingly spent lots of time on this exact directionality concept, yet put this contradiction in.
I came here to say the same thing. I’ve seen this multiple times today in several places and thought exactly that. Maybe they should have said clockwise (starting at the head) or counterclockwise?
They say "thus, on average, about two-thirds of cats preferred to sleep on the left side of their body with their left shoulder down", and their image for leftward lateral bias shows this. So I guess leftward means "lying on their left side", not "curling left".
But, they suggest this is because "Upon awakening, a leftward sleeping position would provide a fast left visual field view of objects", which seems suspect. When my cats sleep on their left, it's their left eye that's obscured by their paw, and their right eye that has a better field of view!