I'm not sure if it counts as a dinosaur, because dinosaurs are only dinosaurs if they're from between the Triassic and Cretaceous periods, right? I dunno. Anyway, I like this dude called an Estemmenosuchus...These guys preceeded the Triassic period (only by a little bit, they're form the Permian period which is right before) and they're waayy coller than other dinosaurs. This is in part because they are hideously adorable, and also cause they're synapsids, which is a "mammal-like reptile." That combination (to me) is inescapably keen and neat-o.

[davidn13]

utah raptor or allosaur for the carnavores
ankylosaur or triceratops for herbivores

[Kadesh]

 My all time freaking very favorite dino................ issssssssss....................... (drumroll) ........... The T-Rex off of Toy Story. 

[Mental Disorder]

LOL! my favorite would be those really samll caniverous ones. kinda like raptors but hella small.(like a chuhuahua)

Those are Copsonathus. (Don't know if I spelt right)
Well mine would be Dilophasaurus.
They have these colorful fins that they used to scare away predators.
They also spit blood at prey to blind them and take them out as a pack.

[rave phillaphia]

pteradactyl's are a type of pterasaur... they are not really dinosaurs, it is a misconception. They are a completely different species... Sorry to burst anyones bubble.

I like to stick to the traditional Stegasaurus. It's defensive mechanisms are so cool!!!! <3 <3

And also I really like birds... Yes birds are dinosaurs (well the only living ones around today). Basically they evolved and took flight... it is now suggested that most dinosaurs actually had feathers like your guys' fetish for raptors when their desendent is birds like the Emu. <3<3

[blow_fly]

Mine would be Triceratops. Always wanted a herd of those as a little kid.

[shenanigoat]

Ankylosaurus. If you get past the swinging club tail, good luck biting through.

http://dinozaury.wartowiedziec.pl/fckfiles/Image/Ankylosaurus1.jpg

I don't know maybe the Styracosauraus... or the  ankleosaur...i like the ones with  that are  built like tanks and those with interesting  crests of bone  and or /horns....sorry if i misspelled those spell check keeps wanting it to say Tyrannosaurs or stegosaurus

RAPTORS.
VELOCIRAPTORS.
 

[AlfieTimewolf]

Spinosaurus

It was ingenius that the paleontologist who discovered this dinosaur stuck the word 'Spine' in front of the word saurus because of the large bony ridge along its spine. (sarcasm)

[tardis666]

Teradactiles hands down.