Ninjasaur is about a dinosaur who is also a ninja (not the other way around), created by Jason Horn. This webcomic has been running (almost weekly) since 2007.
There was a successful Kickstarter to print a collected edition in 2012. Check out the iOS app that offers an entire issue PLUS a mini-game. https://itunes.apple.com/us/app/ninjasaur/id570593350?mt=8
Jason Horn is a super nerd who makes comics. Jealous?