A horseshoe with splaying and flexibility features has a U shaped compliant metallic unitary body having left and right wings and a central integral toe area which forms a compliant leaf-spring disposed proximate to or as part of the toe area. The leaf-spring may be crescent shaped and resiliently deforms exerting pressure sideways thus causing splaying of the wings. The leaf-spring may have a groove on either side to assist farrier-preparation during horseshoe sizing. The leaf-spring forms a cavity in use, which is optionally filled with a resilient material, e.g., silicone, to prevent accumulation of dirt/debris in the cavity. Optional contiguous serrations on the left and right wings provide relative vertical flexibility of the left and right wings. The splaying and flexibility enhance horse-hoof comfort and hoof-structure regeneration. The horseshoe may be cast/forged, blanked, or welded or produced by mechanical joining. Preferably, the horseshoe comprises hardened spring steel.
