Duhamel and Fergie married in January 2009 in front of celebrity friends like Kate Hudson, Kid Rock and Rebecca Romijn at an intimate ceremony in California.
The couple recently lost their adopted dog Meatloaf, who suffered a brain disorder, but are raising a second dog named Zoe.
When asked whether the couple plan on adopting any more dogs, the New Year's Eve star told Us Weekly: "We're going to focus on a human first. We're going to focus on raising a human and then maybe we'll get a dog after that.
"We know how Zoe is and she's really good around kids."
Back in March, Fergie insisted that she and Duhamel would not be starting a family anytime soon.
She said: "It's not happening yet, I can tell you that definitely. We want to have a family, so that is in the cards, but it's just not this second."
Watch the trailer for New Year's Eve below: