| The pikas worked a relay system and the weasel abandoned the trail when the fourth pika became the object of the chase. |
| The social system of pikas varies considerably among species, ranging from solitary individuals to large, gregarious colonies. |
| The ermine's diet consists primarily of mice, but they also prey upon cottontails, small hares, porcupines, squirrels, pikas, and rats. |
| However, it is also possible that in years of late snow-melt, pikas may lose litters or reabsorb litters and then breed again in post-partum estrus. |
| The original steppe was host to a myriad of species, including many small mammals such as susliks, pikas and voles, that are staple prey for sakers. |
| Their principle source of food is mice, but squirrels, snowshoe hares, and pikas are also popular. |
