Thats it for monstergirl animation, sure theres alot more out there but these are pretty high quality and i found alot of futanari ones too. For these gifs my definition of monstergirl wasnt very strict.
Monstergirls fucking animated by Chris Armin
Monstergirls with futa dicks animated gifs by Gmeen and Dieselbrain
Monstergirls has been a hard category to search porn for so theres going to be some catgirls and alot of demons with the centaurs,cowgirls,googirls and others. Mix of gifs and video on this post.