Question Author
We're not blaming the kennels at all lankeela, just one of those things, like catching a cold yourself.
We're 99% sure that Mum's dog did get it in boarding kennels though. He was in there for 10 days, and started coughing about 3 days after coming out. Figured with an incubation period of 10 days it had to have been caught there. My mum did call them, just to let them know, not to apportion blame in any way.
We've never given kennel cough vaccination to any of our dogs before, just that our new pup was quite expensive, and we know my mum and her dog are quite sociable with every dog in a 100 mile radius! We thought we would just get it this year, and maybe when she is at the other end of her life.
She's perky though. Apart from the hacking cough, you would never know she was ill.