Troides helena common in many of the localities in which it occurs, was classified as vulnerable in 1985. Helen in Greek mythology Helen was the daughter of Zeus. Cerberus or Kerberos, in Greek and Roman mythology, is a multi-headed hound which guards the gates of the Underworld. This species is protected under Wild Animals Protection Ordinance Cap 170 in Hong Kong. The common birdwing is protected in Indonesia and may also require protection in peninsular Malaya also. It is listed in Appendix II of Convention on the International Trade in Endangered Species of Wild Flora and Fauna (CITES) as are all other
The Dog in the Manger the grain, but who nevertheless prevented the horse from being able to eat anything either." The story was first glossed in the 1st century CE lexicon of Diogenianus as "The dog in the manger, concerning those who neither themselves use nor allow others to use: Insofar as the dog neither itself eats the barleycorns, nor allows the horse to". It was twice used in the following century by Greek writer Lucian: in "Remarks addressed to an illiterate book-fancier" and in his play "Timon the Misanthrope". One other contemporary poetic source is a paederastic epigram by Straton of Sardis in the