Seeing-Eye Chihuahua

A man goes into a bar with his dog. He goes up to the bar and asks for a drink. The bartender says:

- You can't bring that dog in here!

The guy, without missing a beat, says:

- This is my seeing-eye dog.

- Oh man - the bartender says

- I'm sorry, here, the first one's on me.

The man takes his drink and goes to a table near the door.

Another guy walks into the bar with a Chihuahua. The first guys sees him, stops him and says:

- You can't bring that dog in here unless you tell him it's a seeing-eye dog.

The second man graciously thanks the first man and continues to the bar. He asks for a drink. The bartender says:

- Hey, you can't bring that dog in here!

The second man replies:

- This is my seeing-eye dog.

The bartender says:

- No, I don't think so. They do not have Chihuahuas as seeing-eye dogs.

The man pauses for a half-second and replies:

- What?!?! They gave me a Chihuahua?!?