Pokemon that are the same size as Doruyuzu (blatantly copy pastad off Bulbapedia):
Bulbasaur Metapod Raticate Dugtrio Growlithe Bellsprout Hoothoot Misdreavus Slugma Tyrogue Magby Marshtomp Cascoon Swellow Volbeat Numel Spoink Trapinch Anorith Snorunt Buizel Gible Riolu Croagunk Zorua Meguroko
Tyranitar is 6 feet and 6.74 inches
Bulbasaur Metapod Raticate Dugtrio Growlithe Bellsprout Hoothoot Misdreavus Slugma Tyrogue Magby Marshtomp Cascoon Swellow Volbeat Numel Spoink Trapinch Anorith Snorunt Buizel Gible Riolu Croagunk Zorua Meguroko
Tyranitar is 6 feet and 6.74 inches