Loving this lil t-rex I printed. The file is by makerbot and can be found here.
Printed quickly and at only 50% scale so a lil rough around the edges!
Print Speed: 60mm/s
X/Y axis movement 30mm/s
I used supports on many parts of it, usually only 20% density of values between 2-4mm
Retraction I had to play around with a bit.