BACKGROUND: Asymmetry in animal bodies and behavior has evolved several times. but our knowledge of their linkage is limited. Tanganyikan scale-eating cichlids have well-known antisymmetry in their bodies and behavior; individuals open their mouths leftward (righty) or rightward (lefty). and righties always attack the right flank of the prey. https://storeanimalwiz.shop/product-category/prescription-dog-food/