A Golden Retriever, A Hamster And 8 Birds Are Best Friends And Live In Harmony (23 Pics)

You have been reinforcing it. It might also be the case that you have inadvertently encouraged it by giving it things it wants when it does it. If you tend to give it things such as treats, toys or extra attention when it is jealous then it will likely do it more in order to get more rewards. Instead, it would help to reward it when it is being well behaved and to avoid rewarding it when it is being jealous unless necessary. You got new pets. If your Golden Retriever started acting jealous when you got new pets it is likely that it feels left out. In this case, it would help to give it attention and rewards when it is being well behaved.