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Dennis the Cat Day
- Date
- May 23, 2026
- Time
- Location
- Old Idaho Penitentiary
- Details
- communityTicketed
Dennis the Cat Day is coming up on Saturday, May 23! Join the Old Idaho Penitentiary in discovering and celebrating the story of the penitentiary’s historic animal mascot, Dennis the black and white tuxedo cat, during our sixth annual Dennis the Cat Day! Activ