Most dogs don't know how to respond to one language, passing a law to be bilingual won't help. Good positive training and a better understanding of dogs will though.

The thing is, well trained dogs don't respond to commands by strangers in the first place.

If you have to tell a dog, other than your own dog, to do something, tone matters a lot more than whatever word you say.

I was sleeping in a hammock on a porch in a small town in Brazil one time, and the owner's dog had wandered by, picked up one of my shoes, and was starting to walk off with it.

I awoke with a start when my wife saw the dog and shouted, "Hey!"

The dog stopped and looked at her with the shoe hanging comically from its mouth, and in a scolding tone she said, "Drop it!"

The dog looked suitably chastened, put down the shoe, and wandered off.

I guarantee you that dog had never heard a word of English in its life. They are much more about tone and posture than language.

but what about the other breeds???

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French, English and Spanish.