It has been known for more than 15 years that passively mode-locked fibre lasers can emit noise-like pulses: quasi-periodic bursts of temporally localized noise. More recently, similar devices have been shown to give rise to dissipative rogue waves in the form of extreme intensity fluctuations. In this presentation we discuss the relationship of these regimes, and report real-time experimental measurements that reveal a new type of dissipative rogue wave phenomenon. Specifically, through single-shot spectral measurements we discover erratic emission of strong Raman pulses at the output of an all-normal dispersion fibre laser.