Thread: the new dog

Depends.

I don't think a 2 multi choice answer covers the scenario well, the poll results won't give you anything substantive to go on with.
Being pack animals I don't believe the old one would be "pissed off" as such, it may have some habits of not getting along with other dogs, but no one would be able to answer that question but yourself.

If its a hunting dog, there would be raft of considerations I would take before I bring a new dog in.
If my current one is stunning in his work, has immaculate mannerisms etc etc and you have the facilities and time to look after two dogs I'd get myself 2 more dogs without a hesitation tomorrow morning.
If the current dog has habits you don't want to rub off on the other dog, I wouldn't bring a second dog in until you have the first one is up to scratch. Otherwise you'll have twice the headaches you initially had.
If my older dog is retired, I'd bring a new dog coz I need one to hunt with, and we can go on for a while....

Too many ifs....but for a pet dog, I'd go with your "heart", if you want one go for it, provided that you can look after both.