JERUSALEM (Reuters) - They thought it had croaked. But missing for a half-century and listed as extinct in 1996, the Hula painted frog has been spotted again in northern Israel, its only known habitat. The species now has another chance to survive, Israels Nature and Parks Authority said on Thursday, reporting that one of its inspectors had come across the frog in the Hula Valley and that it had been placed in a protective facility. Only five Hula painted frogs have ever been collected. Four were found in 1940 and one in the 1950s, when most the valleys marshes were drained in efforts to eradicate malaria and make the land arable.