From the faeces of 35 free-living hippopotami (Hippopotamus amphibius), sampled in south Mozambique, 13 yeast isolates were obtained, distributed as shown (in brackets) among the following species:Candida guilliermondii (3),C. tropicalis (2),C. krusei (2),C. brumptii (1),Debaryomyces globosus (2),Trichosporon cutaneum (1), not identified (2). From the caecal contents of 9 free-living wart hogs (Phacochoerus aethiopicus), shot in north Mozambique 5 isolates were obtained:C. albicans (2),C. lusitaniae (2),C. parapsilosis (1). From the caecal contents of 9 free-living bush pigs (Potamochoerus choeropotamus), shot in north Mozambique, 18 isolates were obtained:C. krusei (6),C. tropicalis (5),Pichia fermentans (2),C. slooffii (2),C. albicans (1),Torulopsis glabrata (1),Trichosporon cutaneum (1). The low total yeast indices of the hippopotami (0.37) and the wart hogs (0.56) are believed to be correlated with the type of diet of these animals (rich in cellulose, poor in starch and simple carbohydrates). The bush pigs, which like the domestic pig, use a diet rich in starch and simple carbohydrates, had a very high total yeast index (2.00).Candida slooffii an obligate saprophyte of the digestive tract of domestic swine was found in two of the bush pig samples.