Catserve (Definition): Feline’s ability to see or watch without being seen, while exercising minimal movement. Cats typically catserve by only opening their eyes or moving their eyes. Catserve is sometimes used in error in the place of floofserve, but the two words are not synonyms.
In Use: “At the sound of the door opening, Pogo, sleeping in the counter, turned one ear toward the sound.
Michael Seidel, writer 
Mine don’t do this much now, but a kitty I had before was notorious for this.
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