I, the Indri; II, the true Lemurs; III, the slow Lemurs and IV, the Galagos.
"Natural History in Anecdote" by Various
The Galagos are chiefly nocturnal, and are more or less omnivorous.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard
According to the study, the world's most endangered primate species include Red Ruffed Lemur, Rondo dwarf galago, Madame Berthe's Mouse Lemur, Roloway monkey, and Grauer's gorilla.
Primates like Galagos (bushbabies) have been documented to perform this double jump behavior to reach a higher platform .
Lift-off dynamics in a simple jumping robot