The Eurasian otter (Lutra lutra, Linné, 1758), a member of the Lutrinae, belongs to the family of the Mustelidae within the order Carnivora (MASON and MACDONALD 1986). The Lutrinae are included in the suborder of the Fissipedia, but are all semi-aquatic. Lutra lutra lives in fresh or salt waters, rivers, streams, lakes, marshes and along sea coasts (KRUUK 1995). Many morphological adaptations help them to forage efficiently in aquatic habitats (CHANIN 1993).
The aim of this study was to conduct nutritional trials with the species to investigate basis
data on nutrition and the nutrition-related disease of urolithiasis to provide information to
improve the captive dietary management.
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