This season so far, 4 Tibetan Mastiffs have chased the lure into the AKC Fast CAT rankings, and right now Wanderlust's Mountain Of Whiteness RN FDC FCAT4 SEA SIN CGCA CGCU TKN ATT BN-V sits at the front of the pack — 20.74 mph, 100 yards in 9.86 seconds, chasing last year's 22.29 mph best, narrowly ahead of Endless Mtns Legion Commander (0.59 mph). Two Tibetan Mastiffs broke 20 mph. The top 4 average 19.1 mph. Nothing's settled until the season closes.
See full AKC Fast CAT speed rankings — by breed, by year, and all-time — on Dash-Hound.