We own Tyria.

The skritt are small omnivorous humanoids whose appearance is reminiscent of rats and bats. Male and female skritt are similar in appearance; any difference is only detectable for those particularly familiar with the race. The skritt are capable of rapidly multiplying—female skritt may give birth to litters approximately three to five times in their lives. These litters rapidly become self-sufficient and move out to live on their own.

Skritt communicate mainly using a series of swift, near ultrasonic chirrups and chitters. While this sounds like a buzz to human ears, the skritt have exceptional hearing and so can communicate a great deal of information in a short period of time. This may be the basis of their group intelligence; larger groups of skritt are capable of expressing a greater number of ideas and making a greater number of decisions in a shorter amount of time, so despite the short attention span of an individual skritt, a large group can collectively possess a formidable intellect, and a full-fledged colony can rival even the asura for cunning.