I was always told don’t get two pups from same litter as their “ allegiance” will always be to each other and not you ..... seen results of this with a colleague who couldn’t walk two of them together off lead .... just ignored him completely and bolted.
There's some merit in this. Two sibling dogs used to operating in tandem from birth can be more determined than the sum of their parts, for want of a better expression.
The two Staffords I have now were trained with the zap 'em collars when off the lead. So now, if they look like they are about to bugger off, they are warned, if they start to run after that they are warned again. That's the point at which they say to each other "oooo shite we're about to get mullared by that nasty invisible lightening bolt thing, quick, turnaround!".
The only problem I've had with siblings is heightened prey instinct. In both cases the bitches were seriously deadly on vermin and cats, and constantly on the lookout for action, whereas the dogs were/are quite lazy. But when the bitch shows interest, the dog perks up and follows. This means there's two on the case, and two needing control, whereas if I only had the dog, a lot of the time nothing would happen. It's great for the most part, and our gardens are largely pest and cat free as a result, but it can be a pain in the arse when in the field, as the bitch just never stops, she's constantly on the go.
I wouldn't trade the benefits of sibling dogs for this though. They truly are just "one dog" as we call the two we have now, they really look after each other and we've never had problems with leaving them alone. I think their overall health - physical and mental - is greatly enhanced by having a constant doggie companion.
