exactly !!!!!
I'm sorry but if mum can't keep an eye on him all the time then she needs to make sure that someone is while she is busy.
The carpark is hardly a safe area for children to play in.
This could have been so much worse ...
(edited to expand a bit more)
I agree - if parents cannot look after their kids at dog shows they should not bring them or forgo coming to the show themselves. I have also had young children running around and scaring young dogs, especially puppies. It is great to see young children at shows wanting to be involved but only if they know how to behave!!!