Any combination of eye color is acceptable in the breed standard, so long as the eyes are healthy. In general, however, black Aussies (self, bi-color, or tri-color) tend to have brown eyes, while red (self, bi-color, or tri-color) Aussies tend to have amber eyes, though these Aussies may also carry the blue-eyed gene. Although some Aussies are born with naturally bobbed or partially bobbed (stubby) tails, the majority are born with full, long tails. In the United States and Canada, the standard calls for a natural bob or docked tail not to exceed four inches as a defining characteristics. Any natural tail length is permitted when showing in Europe, where docking has been banned in most countries, including the United Kingdom.
standard calls for a natural bob or docked tail not to exceed four inches|natural tail length is permitted exceed four inches bobbed|full, long
standard calls for a natural bob or docked tail not to exceed four inches|natural tail length is permitted exceed four inches bobbed|full, long