Angus is a strict single registry — no percentage tiers, no composite paths. An animal is either a Registered Angus or it isn't. Two hard requirements gate everything: the animal must be black and polled. Here's how it works.
The Two Hard Gates
Must be black. Angus is a black breed. Any animal that isn't black is rejected outright — not routed to a lower tier, just turned away. There's no percentage exception.
Must be polled. Angus is a naturally polled breed. An animal that isn't polled can't register. Both gates apply to every animal regardless of breeding or generation.
Two Ways to Register
Gen 0 founder. A Generation 0 animal that's 100% Angus (and black + polled) registers directly. This is the pure foundation stock you start an Angus line from.
Both parents registered. Any black, polled animal whose sire and dam are both Registered Angus can register. That's the requirement — two papered Angus parents plus the color and horn gates.
If either parent isn't a Registered Angus, the animal can't register as Angus.
Things to Know
The gates reject, they don't route
This is the opposite of Red Angus, which sends off-color or horned animals to a lower category. Angus has no lower category — fail either gate and you're simply not registered. Black and polled are non-negotiable.
No percentage tiers
Unlike the continental breeds, Angus doesn't have a purebred-vs-percentage split. You're either a Registered Angus or you're not. There's no "high percentage" appendix to fall back on.
Angus is a foundation breed for composites
Registered Angus is a building block for several composite breeds. It's required to breed up to Brangus (5/8 Angus), and it feeds the Angus side of composites like Chiangus, Balancer, and SimAngus. A registered black Angus also counts as Angus-family for Red Angus parentage. If you're planning any of those, register your Angus foundation stock first.
It's paper, not genetics
As with every registry, this keys off the parents' registration papers. Register your Gen 0 Angus so their offspring — and any composites built from them — can certify.
Summary
Register a 100% black, polled Gen 0 Angus, or breed two Registered Angus together (the offspring still has to be black and polled). There are no percentage tiers and no second chances on color or horns — fail either gate and the animal doesn't register. Keep your Angus papered if you plan to build Brangus or any Angus-based composite.