Akihito et al. (2016) Long-term trends in food habits of the raccoon dog, Nyctereutes viverrinus, in the imperial palace, Tokyo. Bull. Natl. Mus. Nat. Sci., Ser. A, 42(3): 143-161. 5年分163個の糞を調査した結果、95種の植物種子を確認。季節的…