Three Brussels Griffons chased the lure into the AKC Fast CAT rankings in 2016, and Ah-Z's Mad Hatter blazed to the front at 19.84 mph — 100 yards in a flat 10.31 seconds, clear of the field. That top speed makes the Brussels Griffon the 107th-fastest of 134 breeds in 2016. The top 3 came in at 18.3 mph on average.
See full AKC Fast CAT speed rankings — by breed, by year, and all-time — on Dash-Hound.