| It was probably a bipedal animal, probably predatory, and probably the size of a large dog. |
| They acted more like huge flightless birds of prey, than the overgrown bipedal lizards of popular imagination. |
| Theropods are the line of mainly carnivorous, bipedal dinosaurs from which birds evolved. |
| Our exobiologists expect any alien species we may encounter to be bipedal mammals that are approximately our size. |
| If we figure out that the probable ancestor of a flying group was a bipedal cursorial form, then flight likely evolved from the ground up. |
| It was a bipedal creature from what she could see but it resembled something close to a wild tiger in the upper torso. |
