Nimravides the similarities between them at first glance, based on autapomorphies in the skeleton, the two animals are too different to be classified as species of the same genus, and thus, "Nimravides" remains separate as its own genus within the Homotherini. Nimravides Nimravides is a genus of extinct saber-toothed cats that lived in North America during the middle and late Miocene, between 13.6 and 4.9 Ma. Despite its scientific name, "Nimravides" does not belong to the Nimravidae, but is a true cat, belonging to the family Felidae. "Nimravides catacopsis", one of the largest and latest species, was quite large, measuring at
Animals (Scientific Procedures) Act 1986 be done through non-animal or in-vitro methods. The project must also pass an ethical review panel which aims to decide if the potential benefits outweigh any suffering for the animals involved. ASPA involves three levels of regulation — person, project, and place. The 'person' level is achieved by the granting of a "personal licence" (PIL, procedure personal licence) to a researcher wishing to carry out regulated procedures on a protected animal. Having undergone a defined sequence of training, a researcher can apply for a PIL permitting specified techniques to be carried out on named species of animals. The 'project' level