Pweent and I were chasing some sort of little wriggly alien critters around. They were loose in someone's house and we were some sort of exterminators who specialized in alien infestation. (The dream was no doubt the result of the rat-catching I was doing at the time in our attic.)
These particular alien buggers were typically a few inches long, like a very big slug, all wriggly elongated-blob-like. But they could shape shift into other simple, equally wriggly animal forms, like fish and snakes and lizards. They could also combine together to form larger versions. So sometimes there were as few as two to catch and sometimes as many as four. I'd catch one and while it was wriggling in my hand, the top end of it would stretch off and break loose and slither away under a couch. And Jeff would be chasing one and just as he was about to grab it, it would smack together with another one and he could no longer get his hand around it...