The Drella of the planet Alpha Carinae V was a life form, or were life forms, that derived nourishment from the emotion of love.

In 2267, Spock asked the USS Enterprise's main computer whether Redjac, a non-corporeal predator that fed on fear, could exist, and whether there was a precedent for it in the Milky Way Galaxy. The computer mentioned the Drella as an example of an individual that fed on an emotion. (TOS: "Wolf in the Fold")

Though the Drella was not described in detail, the computer's conjecture about the nature of Redjac implies that the Drella similarly existed without form in the conventional sense, and that they were a mass of energy of highly cohesive electromagnetic fields.

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