As I've said before, this was produced at Side Effects Software, and was done completely in Houdini. I was an animator on it, and designed the simple face rig system, as well as did a number of asset management things.
Here is the official description from vimeo:
The new film by Christopher Romano, with Executive Producer Kim Davidson.... A rickety scientific expedition ventures down the Amazon River to a dark lagoon, in search of a mythic Creature! But the Creature, it seems, has a less than mythic agenda! MONSTRO! is a horror story. A love story. A ribald comedy!MONSTRO! at facebook.com/monstro2014, twitter.com/toonlets, and instagram.com/toonlets. And check out sidefx.com to learn more about Houdini 3D animation tools!MONSTRO©2014 Christopher Romano and Side Effects Software. All Rights Reserved.version 1.2