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This concept is referred to as a misconception, because animals do not have backward knees. The part you think is a backward knee is equivalent (homologous) to your ankle. Notice that your ankle bends "backward." Animals have forward bending knees, just like you, but they are often overlooked. Look higher up on the animal and you will see their homologous knee. In some animals, there is a lot of muscle and/or loose skin over the area, so it looks like a rounded hunch near their hips.

Stand up. Lean over. Bend your knees a bit. Now stretch your t-shirt down over your knees. This is how you might imagine many animals having 'hidden' knees.

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13y ago

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