Cavall (Middle Welsh: cauall RBH & WBR; modernized: Cafall;[1] pronounced [kaˈvaɬ]; Latin: Cabal, var. Caball (ms.K))[2] was King Arthur's dog, used in the hunt for the great boar, Twrch Trwyth (Latin: Troynt, Troit).
Cavall was Arthur's "favourite dog", and during a stag hunt, he was customarily the last dog to be let loose to chase after the game (Gereint Son of Erbin).[3]