Yellow lab aggression...

[nzo]

From memory, there is one yellow lab that has very distinct black stripes as described (the aggressor in this case). The others either have none or it is VERY light in color. I will verify and get some more (female) labs.

I have exactly the same problem with Yellow Labs as described in this thread.
The aggressive male is very obviously male, but I am unsure as to the gender of the other 2.
They all looked pretty much the same when I got them about 3 weeks ago. I guess the answer is to get some more and remove the surplus males?

However, the non-dominant males appear to be indestinguishable from females?