Yes, there are such slugs.

Where do you live?

I live in Oregon city. I just read an article in I think The Oregonian about endangered slugs. I hope I didn't kill the last two of them! I am just trying to find out what they are.:)

I couldn't dredge the name from my memory, so I contacted a friend who knows just about everything about slugs.

The slug is likely to be Testacella haliotidea

See this site for lots of info re NW slugs.
http://oregonstate.edu/dept/nurspest/slug_taxonomy.htm

Once there, scroll down to the following:

Subclass Pulmonata
Order STYLOMMATOPHORA
Suborder Sigmurethra
The families:
Testacellidae

Then click on the link (T. haliotidea) in the last sentence to obtain detailed info and a photo.

Here is a link that might be useful: slugs in the NW

Good grief! A carnivorous slug.

rhizo, my thoughts exactly. Not enough I have to worry about my plants - now worm eating slugs. And I'm somewhat protective of my worm population that I've increased over the years with $$$$ compost.