The WWF Panda - Age 50

WWF's world renowned panda logo was designed by its founder chairman, the naturalist and painter Sir Peter Scott, in 1961.

http://www.wwf.org.uk/filelibrary/pdf/pandalogo.pdf (.Pdf file)

Care Bears - Age 30/31

The Care Bears are a set of fictional characters created by American Greetings in 1981 for use on greeting cards. The original artwork for the cards was painted by artist Elena Kucharik. In 1983, Kenner turned the Care Bears into plush teddy bears. The Care Bears appeared in their own TV specials calledThe Care Bears in the Land Without Feelings (1983) and The Care Bears Battle the Freeze Machine (1984). They also had their own television series from 1985 to 1988

http://en.wikipedia.org/wiki/Care_Bears