Do dogs have their own nation or country barrier?

They have a country of origin, where they first appeared.

I'd say the USA. They are treated like royalty there. 

USA. They eat, sleep and have people pick up their sh*t.  Plus they live rent free.

In a sense. Dogs are very territorial.  They protect their home environment, unlike SloJoe Biden and his millions of criminal alien invaders. 

Dog breeds have national origins, so breeds like German shepherd, Great Danes. Rottweiler, Schnauzer, Weimaraner and more originated from Germany and breeds like Bearded Collie, Border Collie, Airedale Terrier, king Charles Spaniel, Clumber Spaniel and more origniated from Great Britain

My big strong American Staffordshire bull terrier can go anywhere and kill anything he wants. America first dominate everything and everywhere.