In continuation of my update naked mole-rat
Scientists identify why African naked mole-rat feels no pain when exposed to acid: British researchers of the Max Delbr-ck Center for Molecular Medicine (MDC) Berlin-Buch have found out why the African naked mole-rat (Heterocephalus glaber), one of the world's most unusual mammals, feels no pain when exposed to acid.
Ref : http://www.mdc-berlin.de/en/news/2011/20111220-mdc_researchers__ion_channel_makes_african1/index.html
