As did the whales.
https://en.m.wikipedia.org/wiki/Pakicetus
https://www.nhm.ac.uk/discover/when-whales-walked-on-four-le...
"Pakicetus, a goat-sized, four-legged creature that scientists recognise as one of the first cetaceans (the group of marine animals that includes dolphins and whales). [Discovered in 1981.]"
https://www.amnh.org/explore/news-blogs/on-exhibit-posts/the...
(I actually saw this in an aquarium/museum exhibit a few weeks ago in Clearwater, Florida.)
As did the whales.
https://en.m.wikipedia.org/wiki/Pakicetus
https://www.nhm.ac.uk/discover/when-whales-walked-on-four-le...
"Pakicetus, a goat-sized, four-legged creature that scientists recognise as one of the first cetaceans (the group of marine animals that includes dolphins and whales). [Discovered in 1981.]"
https://www.amnh.org/explore/news-blogs/on-exhibit-posts/the...
(I actually saw this in an aquarium/museum exhibit a few weeks ago in Clearwater, Florida.)