  Topological spin textures in an itinerant ferromagnet, SrRuO$_3$ is studied
combining Hall transport measurements and numerical simulations. We observe
characteristic signatures of the Topological Hall Effect associated with
skyrmions. A relatively large thickness of our films and absence of heavy metal
layers make the interfacial Dzyaloshinskii-Moriya interaction an unlikely
source of these topological spin textures. Additionally, the transport
anomalies exhibit an unprecedented robustness to magnetic field tilting and
temperature. Our numerical simulations suggest that this unconventional
behavior results from magnetic bubbles with skyrmion topology stabilized by
magnetodipolar interactions in an unexpected region of parameter space.
