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.
Nocturnal vs. Diurnal. Many reptiles are nocturnal, meaning they are active at night and sleep during the day. The bearded dragon is an exception to this rule. They are diurnal -- they feed and roam during the day, preferring to sleep at night, like you. When caring for bearded dragons, you need to ensure their nights are dark, so they can sleep. Avoid using the red incandescent light bulbs that manufacturers make for reptile enclosures at night; these can distract your reptile and prevent her from sleeping.