Crepuscular describes animals during periods of low light, or specifically twilight (around dawn and dusk). The word crepuscular originates from the Latin word “crepusculum,” which means ...

Crepuscular entered the English language in 1668 as an adjective meaning, of, relating to, or resembling twilight. In the 19 th century it began to be used as a zoological term for those creatures ...

Rabbits are crepuscular animals, meaning they are most active around dawn and dusk, great for people who work during the day, as that’s when your bun is most likely to sleep.

These animals are said to be crepuscular. Crepuscular animals include species from every type of vertebrate -- mammals to fish -- and many invertebrates, especially insects.

These are called crepuscular rays, and are caused by clouds blocking the sunlight, their long shadows cast on haze and other particulates floating in our air.

Deer are crepuscular animals, meaning they are mainly active in the early morning, dawn, and early evening, dusk. Combined with low visibility, this tends to lead to more collisions. Walters said the ...