Так и у них - есть. Вот из моей же ссылки - овощи составляют 58-60% рациона, крупы -33% - и там не только рис. Vegetables (58–60%): sweet potato (orange and purple), seaweed, kelp, bamboo shoots, daikon radish, bitter melon, cabbage, carrots, Chinese okra, pumpkin, and green papayaGrains (33%): millet, wheat, rice, and noodlesSoy foods (5%): tofu, miso, natto, and edamameMeat and seafood (1–2%): mostly white fish, seafood, and occasional pork — all cuts, including organs