Kodi is our 2.5 year old tri male. About 6 months after he calmed down and got out of his puppy stage, we decided that we wanted another corgi. I did some research and found that males were best suited to younger females, so we got a female sable named Riley. They love each other, but Kodi is more...passive than dominant, and while she has calmed down a lot from the wild puppy stage, she is still more energetic than him and tries to always jump in front of him or climb on him all the time. Kodi has expressed his jealousness by hiding under our bed and sulking, if she gets on the bed too, or by fighting with her. I think their fighting is just play fighting, but most of the time it's Riley wanting to play, and Kodi just being annoyed...but he knows better than to fight back really, he just defends himself. He also does this horrible growl when we pet Riley...like a sad howly growl. Riley isn't the only one he is jealous over...whenever my husband comes and tries to lay down with me or sit next to me or hug me, Kodi HAS to jump in the middle, and if he can't he will sit there and growl! I know he isn't aggressive when he growls, its more of an attention growl...but will he ever just get over it, or do you think he will always be jealous? Also I am about to have my first child in a few months...I hope he doesn't get even more jealous when the baby comes.