...is the SVG supposed to be screwed up somehow? Someone uploaded the image to Derpibooru, and while the full image is fine, the preview image is borked. When I load the SVG in GIMP, it's borked in the same way. It's most confusing!
It opens fine in Inkscape, which is the program it was made in.
Browsers tend to screw up the previews of SVG images (dA does that so often that I had to add an explanation to each of my downloadable SVGs), and even different vector programs may have some some incompatibilities between them (for example, a lot of my vectors would have some errors if opened in Adobe Illustrator - I would have to specifically go extra lengths to make them compatible).
It's rather annoying, and I don't know how to avoid it. Which is why I always avoid uploading SVG files on Derpibooru.