The contamination of grain with fusarium toxins is a problem worldwide. This paper presents a comparison of the main toxins of the Fusarium species, specially A- and B-trichothecenes, zearalenone, fumonisins and moniliformin. Their toxic effects and characteristic clinical symptoms in domestic animals, as well as their carry over into foods of animal origin, are presented and discussed. Furthermore, their relevance in feeding practice and on animal health is described. The maximum level recommended in Austria for deoxynivalenol in animal feed is 0.5 mg of deoxynivalenol per kg feed (88% DM) for swine. For beef cattle, laying hens, turkey and breeding poultry it is 1 mg/kg and for broilers 2 mg/kg. These recommended levels are presented and discussed. Furthermore, the Austrian levels for zearalenone as 0.05 mg/kg feed (88% DM) for prepubertal female swine, and 0.15 mg/kg for fattening pigs and breeding sows are also given and discussed. There are no maximum values recommended for zearalenone concentration in feed for beef or poultry in Austria. Additionally, the recommended maximum levels of these toxins for animal feed in different countries such as Austria, Germany, Canada and USA are compared and discussed.