Brilliant Idea, lets take a Cat and give it a Witch Hat for Halloween.
Update: Removed largely unnecessary support from back of neck. Also uploaded supportless model by request.
Update 10/26/15: Fixed remaining chunk of support on back of cat. Whoops.
Supports defined in Meshmixer should be enough for most printers.
Using mesh mixer, placed a hat on the cat's head, then gave it supports!