Originally Posted by bootscootingbabe
Sabino can be confused for frame as well though. Sabino can mimic it. I wouldn't be comfortable calling her frame unless she tested positive for it.
However, I'd be comfortable saying she phenotypically may be frame, as in, she looks it.
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Same could go for tobiano and sabino though. It can be mimicked by other patterns. In fact, the pattern I would be LEAST comfortable assuming isn't there until it's tested for IS frame. I would rather assume frame was present in every horse of a breed that frame is present in, than assume it's not there and possibly breed the horse. All horses of breeds with frame present should assume that they are positive before testing, as a precautionary measure, and to promote any other viewpoint is irresponsible.
Also, I am reasonably sure it is not sabino mimicking frame in this case. Also fairly sure a frame test would come back positive.