David Howells Fleay (; 6 January 1907 – 7 August 1993) was an Australian scientist and biologist who pioneered the captive breeding of endangered species, and was the first person to breed the platypus (Ornithorhynchus anatinus) in captivity. He died on 7 August 1993 aged 86. Early life Fleay was born in Ballarat, Victoria, and had an aesthetic upbringing: His mother, Maude Edith Victoria Fleay, was a notable wildlife artist and had studied painting under Fred McCubbin; his father, William Henry Fleay, was a manufacturing chemist in Ballarat. After education at a state primary school and later a private high school, Ballarat Grammar School, Fleay was first employed in his father's chemist shop and then was briefly a teacher at Ballarat Grammar. He left for Melbourne in 1927 to study for a Bachelor of Science degree and Diploma of Education at Melbourne University. There, he met another student, Mary Sigrid Collie, and they married in 1931, the same year that Fleay graduated having majored in zoology, botany and education. He was employed as a teacher in Ballarat until 1934. Work in natural science Fleay's interest in the natural world coincided with the awakening of scientific interest in endangered species, and the realisation by the public that Australian animals were worthy of attention other than as a source of food. He realised the importance of endangered species early in his career when, in 1933, he was the last person to photograph a captive thylacine or Tasmanian tiger at the Hobart Zoo. In the process he was bitten on the buttocks, the scar from the injury carried proudly throughout his life. In 1934, Fleay was asked to design and establish the Australian animal section at Melbourne Zoo, and worked there for four years. During this time he had several scientific achievements, including the first breeding in captivity of the emu, several bird species including the tawny frogmouth, and marsupials including the koala. He also commenced research into the breeding habits of the platypus. His next public education efforts were nature talks on a Melbourne radio station, in 1937. Later that year, disagreements with the zoo's management came to a head and Fleay was dismissed, principally because of his belief that native birds and animals should be fed what they would eat in the wild. In 1962 Fleay co-founded the Wildlife Preservation Society of Queensland with Judith Wright, Brian Clouston and Kathleen McArthur.