
The Life of Animals | Troodon | Troodon dinosaurs were small, up to 2.4 meters (7.9 feet) in length and up to 50 kg (110 lb) in weight. Troodon includes the largest known troodontids. Troodon had some of the largest known group of dinosaurs, in relation to its body mass (comparable to modern birds) brains. A brain to another Troodon volume ratio was 31.5% to 63% in the form of a reptile a bird action nonavian Real. Troodon had Crista support eardrums, that at least in their own regions dorsal and ventral ossified cartilage remaining...