Reaper's hair is not actually blue. I just didn't have an orange pen at the time I colored in the hair in this image.
I've had a song by Five Finger Death Punch stuck in my head for the past few days. I meant to start this picture differently, but somehow it turned into this instead, going with the lyrics.
Information on the Fehrr species is found here (body structure), here (owner-given info) and here (information from the Top Fehrrologist).
The species creator and owner is Felisrandomis