U.S. News has named a member of the Ivy League as the best national university in each of the past fifteen years ending with the 2015 rankings: Princeton eight times, Harvard twice and the two schools tied for first five times.
Frogs tend to be nocturnal because night is the best time for them to catch prey such as insects and worms. Nocturnal terrestrial frogs are often brown or gray with spotted backs, while nocturnal tree frogs are usually green. These camouflage colors keep them hidden from predators as they sleep during the day.
One of the most common misconceptions about bed bugs is that they hate light. Though there is no denying that bed bugs are nocturnal, they donât hate light. Turning up the lights will not act as a bed bug repellent. Bed bugs are drawn to the heat and carbon dioxide that humans exude during sleep.