- You have a real cow on stage?
- No, not a real cow. It's an actor in a cow costume.

6 seconds sound clip from the Before Sunrise movie soundboard.

You can hear this line at 00:18:40 in the Blu-ray version of the movie.

Quote context

[...]

- We're on honeymoon.

- Yeah. She got pregnant. We had to get married.

- No, I don't believe you. You're a bad liar.

- This is a play we're both in. And we would like to invite you.

- You're actors?

- Not professional actors. Part-time actors for fun.

- It's a play about a cow and the Indians searching for it. There are also politicians, Mexicans, Russians. Communists.

- You have a real cow on stage?

- No, not a real cow. It's an actor in a cow costume.

- And he is the cow.

- Yes, I am the cow, and the cow is a bit weird.

- The cow has a disease.

- She's acting a bit strange, like a dog.

- If someone throws a stick, she fetches it and brings it back. And she can smoke with hooves and everything.

- Great.

- And as you see, there's the address. It's in the second district.

[...]