Definition of Animalia Fera Si Facta Sint Mansueta Et Ex Consuetudine Eunt Et Redeunt Volant Et Revolant Ut Cervi Cygni Etc Eo Usque Nostra Sunt Et Ita Intelliguntur Quamdiu Habuerunt Animum Revertendi | OpenJurist

Definitions from Black's Law Dictionary: 2nd Edition and Ballentine's Law Dictionary as are available for each term in each dictionary.

Animalia fera, si facta sint mansueta et ex consuetudine eunt et redeunt volant et revolant, ut cervi, cygni, etc., eo usque nostra sunt et ita intelliguntur quamdiu habuerunt animum revertendi

Ballentine's Law Dictionary

Definition:
Wild animals, if they are tamed and are accustomed to go forth and to return, to fly out and fly back, such as deer, swans, etc., we understand to be ours as long as they have the intention to return. See 7 Coke, 16.