A protective collar for quadruped animals with a cono shaped form in operational position made of a semi-rigid plastic material, comprised of a tensioning strap (8) inserted through one of its cut in "U" configuration (2) of the flat sheet semicircular configuration (1) which fixed on a conventional and marketed harness (9), what allowed protective collar to bear only on the neck and whiter of animal, so avoiding the permanent load overweight and hit on their head and ears； furthermore being customized according to every quadruped animal, because of its plurality of drawn guided-lines (3, 4 and 5) for trimming along the flat sheet semicircular configuration (1). Its closure mechanism is composed of two Velcro® strips, placed on straight perimeter edges (7a and 7b), on opposite sides and faces, hooking, being able to assemble it and remove it to rest animal and sanitize and shortage said invention.
