The African crested rat looks adorable, but its fur is packed with lethal poison—just milligrams can kill a human. New study discovered they also have a rich social life.@NationalZoo @museumsofkenya @UUtah @MDeniseDearing @SaraBWeinstein doi.org/10.1093/jmamma… 📷StephanieHiggins People in East Africa have known the rat to be poisonous but its source was mysterious. A 2011 paper proposed these rabbit-sized rodents sequester toxins from the poison arrow tree Acokanthera schimperi. They’re the only #mammals to use plant toxins for defense.