What is the exact number of original jataka tales? If we look around we see Jataka tales, panchatantra, Esop's fables and many others are all mixed up. Where can I read original Jataka tales online?

Mahamaya is the birth mother of Siddhartha. After her death, after giving birth, she is said to have gone to the God Realm of the 33 where later she received teachings from the Buddha. She is also said to have grieved his parinirvana in a sutra I cannot find and visited him on earth at that time. Did she become an Arhat or attain other realizations after receiving teahings as was the case with other disciples of the Buddha?

Does anyone have an explanation as to how Buddha explains the reasons as to why are beings born? What is the reason for birth?

In [this](http://www.traumaticbraininjury.net/files/2011/07/Diagnostic-and-Statistical-Manual-of-Mental-Disorders-and-the-Buddhist-Jathaka-Stories.pdf) interesting take on Buddhism and modern psychology via the Jataka Tales and the DSM, is this passage: > The Jathka storyteller elegantly portrays the clinical picture of a > monk (in Dummbala Katta Jathakaya) who had fear feelings, flashbacks, > hyperaousal, avoidance and startling reactions. The monk named Marana > Bhiruka Bikku fits in to DSM criteria of PTSD. Can anybody locate the Jataka tale mentioned here? I tried but did not succeed, probably because of variations in transliteration.