SrRuO3 is an itinerant ferromagnet with T-c similar to 150 K. When SrRuO3 i
s cooled through T-c in zero applied magnetic field, a stripe domain struct
ure appears whose orientation is uniquely determined by the large uniaxial
magnetocrystalline anisotropy. We find that the ferromagnetic domain walls
clearly enhance the resistivity of SrRuO3 and that the enhancement has diff
erent temperature dependence for currents parallel and perpendicular to the
domain walls. We discuss possible interpretations of our results.