A firefly (Photuris lucicrescens) or “lightning bug” is a crepuscular beetle
Myth: Cats are nocturnal.
Fact: The domestic house cat (Felis silvestris catus) is actually crepuscular, which means they are most active at dusk and dawn. Most indoor cats follow a very specific trend of dawn and dusk activity, rather than strictly at night.
Crepuscular behavior is also one of the reasons why cats wake us up every morning at the Same. Darn. Time.
Cats and fireflies are both crepuscular!
Crepuscular Critters!
Crepuscular animals are species that are active primarily during twilight (at dawn and dusk). They tend to sleep at night and lay low during midday, when the sun is at its peak, reserving their energy when it’s hottest. The word crepuscular is derived from the Latin crepusculum, meaning “twilight”. Crepuscular behavior differs from diurnal and nocturnal behavior, which respectively peak during hours of daylight and darkness. However, crepuscular critters can…
Momentary Lapse Of Sanity 