You don't know much about the subject, do you?
Some dinosaurs were the size of chickens.
Look anything like a bird to you?
From what I understand, flying reptiles aren't technically considered dinosaurs. Though the last I heard of that particular subject was more than a decade ago.
Then again, there are the compies:
And anyone who took note of the fact that the velociraptors in Jurassic Part were about six feet tall(I think this was corrected in the subsequent films), in reality...
Yeah. According to the Sega CD game(... I'm such a geek), the raptors in Jurassic Park are actually Utahraptors:
Still quite small for your average dinosaur. It's these kinds of dinosaurs that would evolve into birds. (The lack of feathers indicate that these pictures are somewhat outdated.)
And, for the record, how big is the biggest bird alive today?
But what about the T-rex? From what I understand, the good tyrant has no surviving descendants.