Witzn Wild Adventure was the fastest Sealyham Terrier in 2017, stopping the clock at 12.68 seconds (16.13 mph), up from 12.01 mph the year before — the 2nd straight year planting a flag atop the Sealyham Terrier rankings, clear of the field. That top speed makes the Sealyham Terrier the 178th-fastest of 191 breeds in 2017. The top 3 averaged 11.0 mph — proof of how deep the Sealyham Terrier talent really runs.
See full AKC Fast CAT speed rankings — by breed, by year, and all-time — on Dash-Hound.