If you make a trip to the Philly Zoo you may get so see the baby lemurs. Cute, very cute.  If you're looking to make a great shot take advantage of the clouds, to reduce the contrast so  you can capture detail in the shadows (the dark areas of their fur) without blowing out the highlights (their white areas).  You may still need to cut back and underexpose 2/3 to 1 stop to retain detail in their fur.