Where does “muskeljaatkat” come from?

muskeljaatkat (Afrikaans) comes from Afrikaans kat, from Dutch kat, from Middle Dutch catte, from Old Dutch katta, from Proto-Celtic kattā, from Proto-Germanic *kattǭ, from Latin catta, from Latin cattus — a cat.

muskeljaatkat (Afrikaans): genet (member of Genetta)