My boss has tix and asked me if she could bring her own dog with her to the show. I figured someone here would know! Thanks!

NO, this is a CH only show and unless the dog is entered in the actual show, it is not allowed on the property. In addition, MSG is not the best place to bring a dog, there is no grass for pottying and few will be allowed on the floor to watch the actual breed showing. It would be very unfair to attempt to bring your own dog to the show. Regulations at most shows is that unless the dog is being shown they are not allowed to be on the grounds. It is not often enforced, but it is for the dog's safety as well as all the dogs that are showing.

You absolutely are not allowed to bring unentered dogs to dog shows.