Brazil’s iconic golden lion tamarin, found only in the Atlantic Forest, has been saved from extinction with the population rebounding from 200 in 1977 to over 2,000 today. Local conservationists have worked tirelessly for 50 years to protect natural habitat and bolster the population through breeding programs. Work is now underway to protect the other three species — the black lion tamarin, golden-headed lion tamarin, and black-faced lion tamarin.
https://news.mongabay.com/2022/06/how-brazil-is-working-to-save-the-rare-lion-tamarins-of-the-atlantic-forest/