瑜伽論記 17.249

17.249

云何眾苦所隨故苦？謂生那落迦一向若餓鬼趣中乃至名眾苦所隨故苦者，此中應言傍生一分受苦亦是，上來數有此文。而此中據多分受苦者，謂傍生受苦少於鬼故。

Regarding 'Why is it suffering because of being attended by manifold sufferings? That is, being born in the hells, predominantly, or in the realm of hungry ghosts, and so forth, up to: is called suffering because of being attended by manifold sufferings'—here it should state that a portion of animals also experience suffering; this text has appeared frequently above. But here it speaks based on the majority who experience suffering, because the suffering experienced by animals is less than that of hungry ghosts.