Another snake slithered forward and latched onto his cheek, but I'm pretty sure he was already dead.

A small figure in a suit of metallic fiber came slithering forward.

Alex slithered forward, feeling the sheet metal under his hands.

That's the one where the lady slithers forward as the man steps back.

It wasn't tall enough for me to crawl through, so I had to slither forward and push with my feet.

Ahead of him, Sanner's feet suddenly slithered forward and rolled off to one side.

Paul turned onto his stomach once more and began to slither forward as the earth bucked beneath him.

Web slithered forward on his belly, making only minimal noise.

The eyes grew as the thing slithered forward until it blocked the way completely.

When he and the boys have left again, I slither forward.