Baby tyrannosaurs were about the same size as a dog, new research shows CNNBaby tyrannosaurs dinosaurs were the 'size of a Border Collie' BBC NewsDinosaur embryo find helps crack baby tyrannosaur mystery Phys.orgTyrannosaur babies were the size of dogs when they took their first steps CNETBaby tyrannosaurs were only the size of a Border Collie dog when they took their first steps Daily MailView Full Coverage on Google News