Much of the fascination surrounding Egyptian civilization is linked to the practice of mummification. In fact, to ensure the preservation of the body, the ancient Egyptians mummified both human and animal subjects. However, mummified animal remains are less well studied, although they represent a significant part of the material culture and history of ancient Egypt. The introduction of non-invasive imaging methods has allowed researchers to study the material hidden within the wrappings of mummies. In this article, the cat mummy currently exhibited at the Museo Etnologico Missionario di San Francesco di Fiesole (Florence, Italy), originating from Luxor and legally acquired during an expedition in the 20th century, was analyzed using computed tomography (CT). The CT enabled the identification of the casing content, showing the presence of an entire cat skeleton. The cat had several fractures, some of which were identified in the cervical region, possibly related to the cause of death. Furthermore, the zooarcheological analysis allowed the identification of the age at death of the cat, providing further information about the story of the mummy. This research provides a further contribution to the analysis of mummies, with a case study of a cat mummy that emphasizes the importance of CT scans in humanistic studies and museum environments.