Should I get a second dog?

I think it's a good idea! I have two dogs(miniature bull terrier and beagle). It's always fun to share the love with two dogs, and they always have a companion! I'd go for it! Both the Samoyed and Alaskan Malamute would be good breed ideas for your Golden, but rescueing would be best for everyone. Actually every recue dog i've met, has been calm and submissive. Best of luck!