A young Ring-tailed Lemur jumps in its enclosure at Rapperswil zoo, in Rapperswil, Switzerland, Friday, April 18, 2008.
A King Penguin peers into the camera while others are seen in an enclosure at the Singapore Bird Park on Wednesday April 16, 2008, in Singapore. The Park currently houses 30 King Penguins, 15 of which were bred in the park itself. King Penguins take 14 -16 months to fledge a single chick and each adult can rear a maximum of only two chicks every three years.
In this photo provided by the San Francisco Zoo, a 6-week-old, 12 pound baby Sumatran tiger sits in the outdoor exhibit at the San Francisco Zoo, Monday, April 14, 2008 in San Francisco. His mom delivered triplet male cubs on March 7. She debuted them today, one at a time, in the outdoor public exhibit.