He is an honorary member of the Royal Academy of Veterinary Sciences of London, the American Academy of Microbiology, and the New York Academy of Sciences.
He was awarded the Medal of Merit in Veterinary Medicine, as the highest level (GrĂŁ-Cruz).
He is a consultant with the Pan-American Health Organization, and the Food and Agriculture Agency of the United Nations.
He belongs to more than 30 Brazilian and international scientific societies, of which he has helped found 14 and served as an official of at least 12.
He is the author of numerous books and over 150 scientific papers on primates, brucellosis, bubonic plague, medical mycology, the teaching of veterinary medicine, and the environmental crisis in Brazil and other countries.
The recently founded Milton Thiago de Mello Environmental Institute, in Sobradinho, Distrito Federal, Brazil, is named after Thiago de Mello, also.
Almost all Brazilian primatologists have, at one time or another, studied under Dr.
Milton Thiago de Mello.
He turned 100 in February 2016.