This male Kenyi used to be fairly mild mannered until he completely changed to his male colors. Now he is starting to chase anything that comes close to his little hang, the rock that he thinks he owns. The Yellow Lab is starting to be more brave also. It does not chase anything but it holds its ground if harrassed. Can anyone tell if the Yellow Lab is male or female. I do not know much about labs. I have had this one for about eight months and it has changed colors somewhat. Sometimes it gets dark, kind of black and other times it looks yellow with black around its fins. I believe it is male but I just need clarification.