这组的大多数狗都先看左边的图，支持先前研究的调查结果发现：当被呈现意想不到的事物时，狗趋向于看左边的事物。
Most of the dogs in this group looked first at the image on the left, a finding that supports earlier studies that have found dogs tend to look to the left when presented with something unexpected.
图4用干旱地区的一个例子描绘了不同种的性状趋向性。
Figure 4 depicts character convergence in different species using an example from an arid region.
捕食者趋向于聚集在最有利可图的斑块中，直至移到另一块不太拥挤的斑块中去会更好。
Predator will tend to aggregate in the most profitable patches, but predator crowding will reduce the patch profitability until it is better to another less crowded patch.
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