| Summary: | [EN] The micromammals (orders Rodentia, Insectivora, Lagomorpha and Chiroptera) from the cave of Las Aguas site of the end of the upper Pleistocene are here studied for the first time. The fauna comes from the following drillings and levels: vestibule, drilling squares G6-G7: levels A, B (14.440-15.030 BP), C (14.740-17.630 BP) and D; drilling square N1: levels A, B (14.750 BP) and C, and drilling square M3: level B. The list of micromammals of the site is the following: Apodemus sp., Arvicola terrestris, Microtus arvalis-Microtus agrestis, Microtus oeconomus, Microtus lusitanicus, Chionomys nivalis, Sorex araneus, Neomys fodiens, Crocidura russula, Talpa europaea, Erinaceus europaeus, cf. Lepus sp. and Miniopterus schreibersii. All these taxa live nowadays in the cantabrian region except: Sorex araneus which distribution in the Iberian Peninsula has reduced to the north of Catalonia and Microtus oeconomus that is not in Spain but in northern Euroasiatic regions. The most abundant species in almost all the levels is Arvicola terrestris (between the 48,7 % and the 35,4 %). After Arvicola terrestris, the most abundant taxa in decreasing order with high and very similar percentages are: Microtus arvalis-Microtus agrestis and Microtus oeconomus. The paleoenvironmental study of the faunal assemblage suggests a mainly open and humid environment and a cold climate. [ES] En ese trabajo se estudian por primera vez los micromamíferos (órdenes Rodentia, Insectivora, Lagomorpha y Chiroptera) del yacimiento del final del Pleistoceno superior de la cueva de Las Aguas (Cantabria, norte de España). La fauna procede de los siguientes sondeos y niveles: vestíbulo, sondeo cuadros G6-G7: niveles A, B (14.440-15.030 BP), C (14.740-17.630 BP) y D; sondeo cuadro N1’: niveles A, B (14.750 BP) y C; y sondeo cuadro M3: nivel B. La relación de micromamíferos del yacimiento es la siguiente: Apodemus sp., Arvicola terrestris, Microtus arvalis-Microtus agrestis, Microtus oeconomus, Microtus lusitanicus, Chionomys nivalis, Sorex araneus, ...
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