No, Dinosaurs are not extra-terrestrial aliens, which is what SETI is looking for. And they are not "true" aliens (what's the correct term for this?) Dinosaurs

No, Dinosaurs are not extra-terrestrial aliens, which is what SETI is looking for. And they are not "true" aliens (what's the correct term for this?) Dinosaurs and Humans share a common ancestor. We evolved from the same origin. We both have DNA. We are literally cousins. SETI is searching for life that originated from dead matter independently from earthlings. Those extra terrestrial beings may not necessarily have the same basic structure (DNA) as us.