Simple categories matching bipedal:

• creature,
• predator,
• carnosaur,
• animal,
• mammal,
• being,
• dinosaur,

Members with property bipedal:

• kangaroo,
• tyrannosaurus,
• human,
• monkey,
• ape,
• deinonychus,
• coelophysis,
• man,
• hadrosaur,
• ornithopod,
• velociraptor,
• theropod,
• carnivorous_theropod,
• jerboa,