People tend to check in during these times:
Find your friends. Learn about life on campus and in Durham. Make connections. Earn badges. Unlock specials. Most important, have fun.
In the winter the lemurs stay inside. You can still see them (they're behind glass) but if I were to go back, I'd go in the summer.
Watch out for the nocturnal aye aye. In Madagascar you're considered cursed if it points its middle finger at you.
Book your tour early to get a spot and be sure to ask the docents lots of questions to learn lemur trivia.
Feeding nocturnals is exhilarating.. Beware the slow loris' toxic bite
The "walking with lemurs" tours are expensive but worth every penny! DO NOT miss your chance to go on one.