hi found this on you tube, its a old video from the making of ghostbusters showing the screen test for the terror dog and slimer models, hope you enjoy
awesome! Im a huge movie guy and special effects lover (Im going to Tom Savinis school)
Great find 
This has been around a while, but it’s a great video!
I love the Slimer screen test part.
Is it just me or does anyone here agree slimer looks better and a bit more real in the first movie?
Yep! A way better sculpt, had much more character, and he was much more kinetic. His moment at the dining cart is a classic, he looks super soft & flexible.
The Ghostbusters 2 version, had more in common with the cartoon Slimer, was very static despite adavances in animatronics, appeared much too large, and was poorly composited into the action.