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Interesting invention? What? An aspect of an animals body is an invention?

is it not an invention to research an animal?

An invention is generally a word used to imply the creation of something new. Like invention of the light bulb. :)

The word for this would be study, or research. Because the authors were trying to understand this aspect of the animal that they observed.

Cheers. Now I understand where you were coming from! I was confused!

Researchers find this direction of the animal and get invented, my first job is to write to you my friend..I promise! :)))) @justtryme90