Fastest Mastiffs — Fast CAT Speed Rankings (2021)

Bittersweet's Margaret Mayhem was the fastest Mastiff in 2021, stopping the clock at 8.76 seconds (23.35 mph), just off 2020's 24.33 mph best, edging Claymore's You Will Be My Squishy by a whisker (0.25 mph). Four Mastiffs broke 20 mph. The top 10 averaged 19.4 mph — proof of how deep the Mastiff talent really runs.

1. #1 Bittersweet's Margaret Mayhem BCAT TKA FITS — Bitch — 23.35 mph
2. #2 CH Claymore's You Will Be My Squishy BCAT CGCA CGCU — Bitch — 23.10 mph
3. #3 GCHS CH Gatehouse Lp Look'N For A Feeling CD BN RE FDC CAX7 DCAT ACT2 ACT2J TT DD THDA RATCHX16 CZ8P7 DNX5 HDN CGCA CGCU TKE ATT BN-V5 CD-V2 VHMA VSWE FITG FTI — 22.01 mph
4. #4 River Rock's Beautiful Bonnie DCAT CGC TKN — Bitch — 21.85 mph
5. #5 GCH CH Claymore's Dumb Blonde RN BCAT CGCA CGCU — Bitch — 19.82 mph
6. #6 CH Meadowfarm's Head Over Heels BCAT — Bitch — 18.45 mph
7. #7 GCH CH Mountainview Pebbles RockintheWorld At Stonesedge CD RE FDC DCAT SWA SCE SIE SHDA DD THDN CGCA CGCU TKE ATT BN-V CD-V VHMA VSWE FITG FTI — Bitch — 17.15 mph
8. #8 GCH CH Bittersweet's Pearls Are Always Appropriate FDC CA BCAT — Bitch — 16.76 mph
9. #9 GCH CH Celtic's Claymore's Queen Esther FDC BCAT CGCA CGCU — Bitch — 15.97 mph
10. #10 CH Cabezon R3 Mariah Of Sherridane CD BN RI FDC BCAT SWA RATN CGCA CGCU TKN ATT — Bitch — 15.60 mph
11. #11 CH Claymore's Theia Dorea — Bitch — 15.29 mph
12. #12 Bobaras Sweet Little Mystery CA BCAT CGC — Bitch — 14.36 mph
13. #13 GCHB CH True Story's Don'T Dismiss Me CD RA FDC CAX FCAT CGCA CGCU TKA ATT VHMA VSWB FITG — Bitch — 14.04 mph
14. #14 CH True Story's Etched In Stone — 11.27 mph

See full AKC Fast CAT speed rankings — by breed, by year, and all-time — on Dash-Hound.