
Hi tessisbest,
like the others I would recommend having two :) TBH I would not by choice ever go back to being a single dog household as IME the dogs really prefer having other in house canine company and it's peace of mind for us when they are being left home alone.
I love watching them play together and observing their quirks and traits - it give a whole new insight into dog behaviour and body language, far better than can ever be read up on or researched :)
As Brainless recommended I'd also advise that you have a male as your new addition - on the proviso of course that you sort out the worries of future seasons (IMO it is better to have the bitch neutered rather than male castrated).
Assuming accidental litters are prevented, the other possible 'con' is how it may affect your finances - double vet fees, insurance premiums, food costs, kennel costs if you need to use them or alternatively if you have family/friends who currently dog sit for you would they be as willing with an extra one. These issues aside, I'd definitely say go for it - it's all 'pros' for the dogs :)
HTH,
best wishes, Teri