I think it comes down to your relationship with your current dog. as I said above when we brought the second one into the house the first become somewhat jealous and possessive. Ours are both the same breed it might just be down to the age gap. Breeding some of his bulldogs means he is a serial breeder, I wonder how interested he is in health issues of that breed or whether he is just rubbing his hands at the thought of £2k per puppy. suspect the latter. So why has he got the Frenchie and do you know much about its history other than its about 12 months old?
I do know the guy, if only slightly... I have no basis on which to report him, all this is conjecture. I remember him telling me he was getting this French bulldog pup as we had not long become Luna's owners. I know nothing of this guy's history as a breeder only as a dpd driver. I do agree about the high cost of these dogs & see how that can be a draw into the breeding life.... I don't want to do that though.... I care a lot about my dogs welfare (which includes her having company) but can't (yet) care too much about this other dog or as @Barry Haynes has said I would become a rescue centre!!
As a life time dog owner myself, you bring a dog into your life and build a nice stable relationship with the dog as it grows up and everyone is happy and contented, So why on earth would you think out of the blue to bring another dog into your life and risk spoiling what you have established. If you have decided together to get another dog and then go out looking for the right one, maybe a rescue dog, that's fair enough, but on this occasion someone has approached you out of the blue offering you another dog. Its not the way to do it. Maybe the new dog would fit in to your existing set up, but what if it doesn't work out, what would you do then? I would stick with what you have and enjoy it.
As multiple dog owners (we have four) I can tell you that no two dogs are alike, they all have their individual characteristics. So it is very difficult to give advice without seeing the dogs in question. I'm afraid I can't remember what breed Luna is so it's hard to say if they would be compatible. The important thing to remember is that dogs have a pack instinct so it is vital that you ensure that YOU are the leader and make sure they know that! Beyond that, they will establish a pecking order which will involve inevitable scraps which you as the boss will have to control. As they are both young bitches, I think they might not fight too much. They are still young enough to train. I have to say that if this Frenchie really is in danger of her life, she should be rehomed. You might be the person to initiate this process. If so, then I hope it works with you but if it doesn't, then the dog would have to be rehomed again but at least it would be in a safe environment.
We’ve got four dogs, (two oldies, a two year old and a six months pup) Three are rescues and the latest addition is an old English sheepdog crossed with a Newfoundland. The youngsters play really well together and clearly ‘love’ each other, the pup follows him everywhere. The oldies interact a bit then take themselves off when they’ve had enough. I think one dog is lonely without a companion of its own kind. I’d get the new dog, watch how they interact and if it’s not perfect rehome the frenchie. Worst case, you’ve saved a dog and been a temporary foster. Best case, they’re friends for life!
Having had a ‘pair’ of dogs and also a dog on his own, I’ve said 100% that if I ever feel ready for another dog, then I’m definitely getting two, with just enough age gap that they can play together but the first one is still definitely top dog by that point.
I have asked my boss how he would feel if I took two dogs to work as opposed to one, he said "That's not a good idea"! What a ******er!
Sorry to hear that, don't blame yourself, however! Your intentions were honourable and your caution commendable.