Kaji is the jealous type. If BF and I are hugging or kissing, Kaji wants to be in the middle of the action. Not because he's jealous, I think it's more because he wants to join the love fest.
But when it comes to other dogs or kids getting mommy's attention, Kaji gets very jealous. My dad and I were going nuts over a picture of Kaji in his Halloween costume. Kaji came running from the other room and demanded to be picked up into our laps so we could ooh and ahh over him instead. He's such a funny pup!