help ID strange worm

Was working in the yard today and came across this strange worm or slug and I don't know what it is. Could anyone help me? It was between two pieces of wood.

Another shot of the critter. Its head flares out and when I touch it, it shrinks back and looks like a striped worm. Slimy like a slug, small like a worm. It was about 5 inches long when I stretched it out, then it shrunk up to about 2 inches. While we were taking the picture, it lost part of its tail. That is my dirty finger next to the worm.

Another shot of our unknown yard monster with the part of tail that came off.

i don't know what it is but it's kinda cool and icky at the same time. i hope somebody id's it.

Your area must be moist and soggy? It looks like a trematode. Rather big but the head gives it away. They parisitise ruminants. Sheep cattle. any near by?

Normally the area is not wet but we had a couple huge rains this week. It was found between 2 pieces of rotting boards. No animals other than squirrels and a few neighborhood cats that rambled through. Now I am about to google up trematodes. Thanks for the info Soferdig. SheVerne

Trematodes are creepy. Just went to Google and found something similar to my worm but not exactly. When will I ever learn to leave things alone and quit nosing around. For sure I will wear gloves when I garden from now on. SheVerne

Your worm is this http://creatures.ifas.ufl.edu/misc/land_planarians_photo1.htm
More info http://creatures.ifas.ufl.edu/misc/land_planarians.htm
They eat slugs but they also eat earthworms.

Wow, I've never seen those before! They are really creepy and the fact they eat earthworms make them even creepier!

Calalily, you hit the nail (er-worm) on the head. When I looked up trematode it had me spooked and wished I'd never touched it. Now I don't particularily like having them around eating my earthworms, at least maybe they won't get in my innards. We have plenty of slugs so they should get plenty fat and the fact that they are cannibals helps some. Thanks for the information. SheVerne

Euuch. Even we strong hearted vets are queezy picking up that one. You have to know if you eat slugs you are going to be slimy. Picture being reincarnated this thing after being human. HaHa

You know, it's bad enough that we have to put up with slugs and mosquitos, now we have these little monsters. I still have him if anyone would like to have it. HeHe