Black-and-white ruffed lemur - call 1, Palmarium, Madagascar
A series of images of a Black-and-white ruffed lemur going nuts, meaning they express their call. They very regularly do so, and in this case it was easily kick-started by making a low grunting noise. Check out the mushroom-shaped tongue and the tooth-comb this reveals.
The moment the mouth fully opens is very brief, so I finally had some advantage in being capable to shoot 9 images per second. An example from the wild:
The black-and-white ruffed lemur is the more endangered of the two species of ruffed lemurs, both of which are endemic to the island of Madagascar. Despite having a larger range than the red ruffed lemur, it has a much smaller population that is spread out, living in lower population densities and reproductively isolated. It also has less coverage and protection in large national parks than the red ruffed lemur. Three subspecies of black-and-white ruffed lemur have been recognized since the red.. more