At 12 weeks old, the Mongoose Lemur baby is doing well on exhibit with mom, dad and older sister. Zookeepers believe his is a male due to his cheek and throat color changing to the reddish brown that males exhibit. He is starting to venture off mom for longer periods of time and has even been seen wrestling with dad a bit. The baby is also starting to check out and sample some of the adult food. You can see the youngster clinging on to mom in the video below.