There's an interesting species out there, the skiplings. They are small, furry beasts, and usually go unseen because they live underground. When there's trembling action however, they leave their burrows to check out what's going on, typically while sitting up.

The rarest breed has the distinct habit of appearing quickly, and once things are observed to be calm, slowly return underground. They are mildly social in that several of them can inhabitate an area, but each has its own little den for sleeping.

Unfortunately, skiplings are a rare species so that they are protected under WCAG 2.1 section 2.4.1 at maximum criticality level A.