My keel, let me show you it!

"A sergal's arms, shoulders, chest, abdomen, and waist approximately resemble that of a human. One important distinction is the prominent ">" shaped breastbone, sternum or the keel. Due to the dense mass of chest fur, this bone protrusion is sometimes mistaken as merely a lump of fur. Due to the varying height of this protrusion between individuals, sergal clothing and armor are constructed with a wide raised portion around the breast to accommodate this." - Vilous official wiki

Artwork by  SilentDeathFootsteps
Sergals are  mick39