Kate Xagoraris shows how to add a drool effect on geometry with particles.
This tutorial from Kate Xagoraris shows how to make a drooling effect in Side FX Houdini using particles. The system uses curves to control where the particles travel along the surface of the geometry.
In a similar tutorial, Check out this walkthrough by Sharan Vaswani, who is an FX TD at Rythm and Hues. Vaswani shows some of his concepts when creating the saliva for movies like Hellboy (2019) and others.
About Kate Xagoraris.
Kate Xagoraris is a visual effects artist at Mr X. In her spare time, she writes articles on exploring Houdini better and incorporating its tools with science. You can check out her work here.