In 1637-1644, Post was in northeast Brazil, then part of the Dutch colonial empire. He painted local landscapes. And he also made 34 drawings of Brazilian animals; these drawings were only recently found again.
From 7 October 2016 till 8 January 2017, there will be in the Rijksmuseum in Amsterdam in the Netherlands an exhibition showing these drawings, paintings and stuffed animals of the depicted species from the collection of Naturalis museum in Leiden.
This video from the USA says about itself:
Friday, March 4, 2016, 1:30 pm
The Dutch painter Frans Post was the first European-trained artist to paint landscapes in the New World. His depictions of the Dutch colony in northeast Brazil provided Europeans some of the earliest glimpses of South America. After a seven-year stay in Brazil, Post returned to the Netherlands to create for the Dutch art market numerous landscape paintings of this remote and exotic place. James Welu, Director Emeritus of the Worcester Art Museum, in Massachusetts, explores the wealth of information these paintings offer, both about the land that inspired them and the people who acquired them.