What is "cavall"

Cavall (Middle RBH & WBR; modernized: Cafall; pronunciation: ; , var. Caball (ms.K))) is the name of Arthur's dog, used in the hunt for the great boar, Twrch Trwyth .

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).