Minor writing errors

On a recent trip, I saw this sign:

"authentic Amish made furniture"

What does this mean? That authentic Amish made furniture, but fake Amish didn't?

Of course it needs a hyphen:

"authentic Amish-made furniture"

I also saw this sign:

"No pet's in office."


And on a personal note, my son asked, as we drove from Texas into Arkansas, "Do they speak the same language in Arkansas?" And my other son answered "Yes. They even speak the same language in San Antonio."