Oh, man! That's hard! For childhood nostalgia's sake, I would say triceratops. I associate it with both Jurassic Park and Land Before Time memories. I also think it's a super cool dinosaur, period. Generally, ceratopsians are my favorite dinosaurs, be it trikes or others --I don't think I like trikes much more than other ceratopsians.

Another favorite of mine are carnotaurus. They're so dorky looking with their horns and their tiny useless little arms.

A more recent fave is paralophosaurus. I've been working on the beginning concept stages of a dinosaur novel and paralophosaurus will almost certainly be my protagonists' species. There's a gentle feeling to them that I really like.

But I could go on. I love brachiosarus, I love dreadnoughtus. I love raptors, t. Rex, and ankylosaurus. It's really hard to answer this question accurately because I love so many dinosaurs and I love them so much. When I went to Dinosaur World in Plant City, the giant models overwhelmed me so much that I started to cry from happiness and awe (this was two years ago.) I just really, really love them, passionately. Thank you for asking such an interesting question!