Sources : Genetha

Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, 4.48): The genetha is a beast slightly larger than a fox. It has a color between black and crimson, with occasional black spots arranged in an orderly manner on the skin. The beast is quite tame, unless it has been injured by other beasts. It does not climb into the heights, nor is it exalted in the wonders above it, but it walks gratefully among the low places and above the streams of water, and there it looks for food when it is hungry. - [Badke translation/paraphrase]

Edward Topsel, [1658 CE] (The History of Four-footed Beasts and Serpents): Of the Gennet-Cat, called Genetha -- This beast is called Genitocatus, either for the similitude it holdeth with a Cat, or else because it hath been believed that it was engendered by a Cat, but I rather do assent that the right name thereof is Ginetta or Ginetha, because they are bred in Spain with the Gennet horses, and so taketh his name from the place. Albertus (though a learned man, yet many times he was deceived in the names of beasts) called this creature Genocha, and the Germans call it Ein Gennithkatz. The quantity or stature hereof is greater then a Cat, but lesser then a Fox, and therefore I think it about the Albertus. mold or bigness of a young Fox of six moneths old. It is a meek and gentle creature, except it be provoked; for in Constantinople they are kept tame, and are suffered to go up and down from house to house like Cats. Being wilde, they love the vallies and low places, especially the Marishes or land neer the waters, for the steep rocky mountains they cannot endure. And these Cardan taketh to be Isidorus. Vincentius. Belnac. of the Weasil kinde, because the forme and disposition thereof, especially to the tame and Domestical Weasil, and in Spain they are cald Foinai, being black and ash-colored, distinguished and variably interlined with many spots. - [Edward Topsel]