
I've never heard of the Dalmatian Society - are you UK? There are various breed clubs - the British Dalmatian Club, North of England Dalmatian Club and the Dalmatian Club of Scotland - but not the Dalmatian Society!
Members of all the clubs can use their dogs at stud on any bitch they choose - but care is taken that non-club members agree to abide by the Code of Conduct for breeders. If the bitch owners weren't happy with this - or if the bitch didn't fulfil the criteria - then I can understand they wouldn't let their dogs be used!
I'd be interested to hear the reasons!