Thread:Sarah Manley/@comment-24300520-20130724131922/@comment-1330470-20130724174227

If a GIF image when uploaded to the wiki is larger than the file which is requested by the page, Mediawiki resizes the image. This is fine for most images, but GIF animation is not preserved.

If you want the image to appear animated at that size, you will have to upload a version which is exactly the same size as will be displayed on the page.