You Don'T Know Jack
Lifetime
27.08mph
Rank #4 in breed
Breed percentile
Top 0.8%
vs. 532 ranked Boston Terriers
Best single year
26.77mph
2024 · rank #3
You Don'T Know Jack has at least 2,000 career points — FCAT4 is within 500.
Computed from Fast CAT titles on the official record. Claim You Don'T Know Jack free and count every run toward FCAT4.
Speed over time
3-run average per year · lifetime as reference line
Year-by-year
Official AKC ranking record
| Year | MPH | Rank in breed |
|---|---|---|
| 2024 | 26.77 | #3 |
| 2025 | 26.55 | #4 |
| 2026 | 25.63 | #10 |
| Lifetime | 27.08 | #4 |
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