pallas's pikas are much smaller in body size than other herbivores that usually share the same environment. their body size allows them to consume more of the lower level vegetation, giving them more of an advantage over larger herbivores, such as livestock. like other pikas, pallas's pika is herbivorous and saves grass in the summer to eat in the winter. they often construct haypiles with this stash, but some populations prefer to keep their stores under rocks. their diet consists mostly of grasses, however their diet does range in flowers as well as stems. another form of further nutrition is the consumption of cecotrophs. cecotrophs are the evacuated cecal contents that come from the pika.