There is something quietly astonishing about the Maud Island frog. It is not a showy species. It does not broadcast its existence. The astonishment lies in the detail. It resembles a hand-painted corner of an old painting. The closer you look, the more you realise it has always been there. The world would be noticeably diminished without it. Leiopelma pakeka was formally recognised as its own species in 1998. For decades, it was bundled in with Hamilton's frog. The two look similar enough to fool a casual observer. They share the same ancient lineage. They share the same limbering crawl rather than hop. They share the same absence of eardrums. They share the same stubborn refusal to pass through a tadpole stage. But the Maud Island frog is its own creature. It is shaped by its own island. It is shaped by its own forest. It faces its own particular set of pressures. When scientists looked properly, the distinctions appeared. They were found in body proportion. They were found in colouration. They were found in genetics that have been diverging in quiet isolation for a very long time. The species now survives on Maud Island, known as Te Hoiere. A small translocated population exists on Motuara Island. Both are in the Marlborough Sounds. These are predator-free sanctuaries. They are maintained at considerable effort. The frogs themselves are entirely dependent on that effort continuing. Rats removed them from the mainland long ago. The islands are their last address. This is not a choice. It is a necessity. The frogs occupy them with conservative habits. They have learned not to take chances. They emerge at night into the leaf litter. They feel their way through the damp dark with large, light-gathering eyes. They lunge at springtails and beetles. This involves a characteristic forward thrust of the whole head. They do not pursue. They wait. Then they move. What makes them representative of something much larger is their age as a lineage. Leiopelma frogs are among the most ancient in the world. Their skeletal architecture preserves features that have long vanished from every other frog family. They carry vestigial tail-wagging muscles. These are remnants of a body plan that predates the evolution of the modern frog by over 100 million years. Watching a Maud Island frog move slowly across a mossy log is, in a quite literal biological sense, watching the Jurassic. That it still exists at all is significant. It survives on two small islands in the Marlborough Sounds. It is monitored. It is counted. It is protected. This is either a conservation success story in progress or a very narrow margin. Probably both.