Bleeding
Version 0.11: This article may not be up to date for the latest stable release of Crawl.
Bleeding is a status effect that can occur when a clawed character strikes an opponent in Unarmed Combat. Each turn the monster can lose up to 3% of their current HP per rank of the Claws mutation. Additionally, it causes the opponent to leave blood splotches on the ground wherever it goes so long as the condition lasts.
The following species have claws naturally:
Alternatively, characters under the effect of the Dragon Form spell gain 3 Claws ranks (9%/turn), yellow draconians can inflict bleeding with their acidic breath, and Zin's Recite ability may inflict bleeding against worshipers of other gods.