I found a big orange slug in my garden!

Initially I thought it was a banana slug but now I think it might have been a import from Europe, or one of the other 10 species in our area per this site, PACIFIC NORTHWEST NURSERY IPM Snails/Slugs

I ended up finding two big orange slugs about two inches long and almost an inch thick but since they'd gotten into the snail/slug poison around my dahias (slugs and snails love the tender sprouts when the dahlias are first coming up) they were kind of hunched up.

Looks like they might have been red European slugs. See this video, mine looked like the orange ones. Or see this photo, b comes the closest to what I saw. Or look at this site, there's a picture of an orange one here under Arion rufus.

Initially I thought they might have been Banana slugs which are native to this area. Per this site they are the only native slug. This site has some nice photos.