True, but slug innards are not the color of old brown blood either. Having stepped on a lot of slugs as a child.... (too young to realize that they were critters, but old enough to be horrified by more info after the fact). Anyway, my feet weren't red with the blood of slain enemies.
My mom also used to cut them in half with a butter knife to feed frogs. Wow. I guess that was a weird childhood. Maybe my memory is faulty but I seem to remember them being kind of creamy and oozy all the way through.
FTR, I am now Friend To Slugs. Also a vegetarian. These wars are all in my past.

Friend who uses singular "scissor," me too! Someone brought it up today as evidence against my proficiency in English. Interested in your experience of life using the singular.