If they are non-vegetarian, why do many people consider them to be vegetarian?
Daily science can explain that it is non-vegetarian.
So why people think it as vegeterian? It is because they have lost the sensitivity to distinguish the basic difference.
I would not be surprised if after a few years people start thinking that eating mammals is also vegeterian, only we have to wait until the sensitivity becomes so low.
Next will be humans itself. This is already explained in scriptures.
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