The aim of this study was to elaborate criteria defining the morphotype and to perform a morphological and morphometric analysis of the squamous part of the occipital bone and of the foramen magnum in the European cat. The study material comprised 50 corpses of European cats of both sexes and of bodyweight from 1.35 to 7.7 kg, aged from 1 year to 17 years. The study material underwent detailed preparation and morphometries of the skull, squamous part of the occipital bone and the foramen magnum were performed. The skull index (IC) data obtained indicate that the European cat represents a mesaticephalic morphotype. In the morphometrical analysis of the foramen magnum the following were included: the foramen magnum index (IFM), the occipital index (IOF), and the index of the squamous part of the occipital bone (ISO). In the morphology of the squamous part of the occipital bone two categories were distinguished: the first was characterized by a form close to an isosceles triangle with its base directed to the bottom. In none of the specimens studied was a dorsal notch in the form of a "keyhole" observed, nor was there any other deformation in the foramen magnum, which takes the form of a slightly crosswise elongated regular oval. The results of this study indicate that in the European cat the foramen magnum is free from any pathology and its shape, in the individual development, is conservative.
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