See more of this week's animal photos in Animal Tracks.
Wong Maye-E / AP
A 2-week old male baby elephant is dwarfed next to his 25-year old mother, Nandong, at the Singapore Zoo's Night Safari on Friday, Dec. 10, 2010 in Singapore. This baby is the first baby to be born in the enclosure after 9 years and had a birth weight of 151-kilograms. The Singapore Zoo and Night Safari ensures that its animals in captivity have habitats as close to that of the wild as part of its wildlife conservation efforts. Elephants are listed as endangered on International Union for Conservation of Nature.