Our first project in life drawing was to take two animals skeletons and fuse them together (or take an existing animals skeleton and draw its skeletal or muscular system as an overlay to an Illustration of that animal).
I chose to take a baboon head and stick it on a lion. Hence Liboon!... so clever!
I kept most of the cats structure true to form, its in the shoulder, neck, and head that I morphed the baboon in.