We've recently (2 1/2 weeks ago) added a now 13 1/2 week old puppy to our family and pack of 5 (now 6) dogs. He's really a great little guy and seems to get along with everyone. He's easily "put in his place" by our older dogs. My DD and DH think our Pom is "jealous", as they say he seems broody and withdrawn. But the Woo (Pom) has always been what DD calls "emo" (emotonal). I almost always bring Woo and Solomon (pup) to work with me, but didn't yesterday because I had too many things going on after work that were not dog-friendly. When I got home, I asked DH "How's Woo?". He said "Obviously depressed", so I called Woo outside. Solomon came too, and the other dogs were out. Woo barked his happy bark and ran around, even play-bowing to the pup. Our GP and the others joined in, with Blue (12 yr old beagle/heeler) doing that goofy tucked-tailed gallop in circles around us, with Solomon in hot pursuit. It was all hilarious! Woo was as happy as he gets. So what do you think? Do dogs/pets get jealous, or is there some other term or description for that emotion? BTW - I've taken college level courses in human psychology and ethology (animal behavior), and both disciplines seem to lean towards "no such thing" in animals, but I'm one of those people who is open to the debate.