I thought have bought this was internet fake. It’s not:

Uraba lugens is nicknamed the mad hatterpillar because of its distinctive exoskeletal feature.[4] Every time it sheds the head portion of its exoskeleton, the exoskeleton stays attached to its body. Over time, developing through its life span, the head grows bigger and sheds increasingly larger exoskeleton shells, which build upon each other.[5]

Wikipedia entry