horn - the material (mostly keratin) that covers the horns of ungulates and forms hooves and claws and nails

brush-footed butterfly, four-footed butterfly, nymphalid, nymphalid butterfly - medium to large butterflies found worldwide typically having brightly colored wings and much-reduced nonfunctional forelegs carried folded on the breast

genus Nymphalis, Nymphalis - type genus of the Nymphalidae: mourning cloak butterflies

domestic cat, Felis catus, Felis domesticus, house cat - any domesticated member of the genus Felis