I modelled this in Sculptris, which is great free 3D software by the makers of ZBrush, then uploaded into Sketchfab. Sculptris is very intuitive 3D modelling software, which I use with my Wacom Cintiq 13HD, which even my four year old daughter uses easily! Sketchfab is a great online 3D viewer which now has the ability to import textures into it's material editor. Click on the image and view it in 3D in real time!

dr-paul_stickland.obj by paulstickland on Sketchfab

paul stickland, dinosaur roar,