As we all consider how a virus can travel around the globe inside humans, consider this far earlier, shared migration: When early hominins dispersed out of Africa ~2.5 million years ago, they may have been accompanied by spotted hyenas.
Hyenas also migrated out of Africa, along with? leading? following? early man. #Hyena (because I plan to add to this thread, later)
Hyena paleogenomes reveal a complex evolutionary history of cross-continental gene flow between spotted and cave hyena