Leaps twenty feet

And because I did, Cassius never heard Mouse's claws on the marble floor.
The air suddenly shook with a bellowing, damned near leonine roar. Cassius's head whipped around in time to see my dog leap from twenty feet away and hurtle forward like a grey-furred wrecking ball.
Mouse's front paws hit Cassius squarely on the sternum, and a bloodcurdling snarl exploded from the huge dog's chest as they both went down. Mouse snapped his jaws at Cassius's throat, but he had too much momentum remaining from his charge. His paws slid on the smooth floor, carrying him past Cassius before his teeth could do more than lightly rip at one shoulder.


Dead Beat Chapter 37, Page 335