The Common hedgehog (European hedgehog) is a very mysterious animal that has been puzzling people for centuries. Scientists debate whether a hedgehog stores food for winter and if so – how? Hedgehogs seem to be immune against the poison of vipers, bees and wasps, as well as arsenic, opium and even hydrocyanic acid. It is unknown why hedgehogs remain uninfected while a seasonal blood source for thousands of ticks infected with encephalitis, tularemia and other infectious diseases. In Belarus, their habitat is mainly confined to deciduous and mixed forests with heavy undergrowth.