They found that thylacines didn’t really develop into their dog-like forms until relatively late in their pouch life. Before then, they kind of just looked like big-headed, toothless fetuses, very similar to a possum in a pouch. They look so similar to other marsupials, in fact, that one might mistake another marsupial baby for a thylacine—which is exactly what happened. While collecting the specimens from … Continue reading WATCH: Imaging scans show what baby Tasmanian tigers looked like for the first time