Today I took a trip down to my local creek where I knew I'd find certain millipedes native to my area, and while flipping over logs I seemed to have injured one of them 
The very end of the millipede's body was cut right off, and I'm unsure if there's anything I can do to save them, or if their injury is fatal. Any advise, or should I free the poor thing so they don't suffer for much longer?