I tested it, and it basically works:
you may try http://www.florian-anwander.de/critter_guitari/I_animatedGif_test.zip
The animated GIF I used comes from here:
https://giphy.com/gifs/animation-art-loop-xUOxeWxEHhJyv2sG40/links
(I quoted the link, because the forum software automatically tries to display the first picture.