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.
What do they eat? When adults, all tree frogs are either carnivores or insectivorous. Some larger frog species feed on small mammals and birds. Others eat smaller frogs, fish, or reptiles. In captivity, though, most can be accustomed to feed on insects or rodents that are easily available to them. Still, you should be familiar with your frogs natural dietary habits.