Rooted in place, the man's screams do nothing to inspire you to put aside your personal safety and help him. You're unable to move and can only watch as the creature brings its snarling face closer to the man... closer... closer... and then, as the wolf-thing's face reaches his... it keeps going.
It's at this point that you realise the thing wasn't lowering its head, but was instead melting it over its victim. Looking down the length of the creature's body, you see that the whole thing is melting, turning into a shapeless blob that consumes the man struggling beneath it.
After a few seconds' worth of undulating, the blob messily splits into two smaller ones, leaving puddles of liquid rubber where it had formed. The first blob you immediately recognize as the wolf creature's purple skin and features quickly take shape. You turn to the second blob hopefully expecting to see the man emerge, but instead watch in horror as its color shifts to blue and it gains clearly feline features. Soon, a blue bipedal latex cat-thing stands next to the purple bipedal latex wolf-thing, and both have their gaze aimed squarely at you.
You prepare to run, but instead of pouncing on you the two creatures slowly sink back into the shadows, leaving you alone by a streetlight under which lie puddles of liquid latex.