- And that's not all. Look!
- Coffins! 5 of them.
- And the empty one's, like, dog-shaped.
- Dog-shaped?

11 seconds sound clip from Scooby-Doo, Where Are You! - A Night of Fright Is No Delight (S1E16).

You can hear this line at 00:13:46.768 in the Blu-ray version of the episode.

Quote context

[...]

- It worked! The walls stopped.

- Let's get out of here. I don't like playing musical riddles.

- That's it! Daphne, this is a musical riddle.

- I've got it. Feed isn't a word. It's musical notes. F, E, E, D.

- Look! Secret stairs in the floor.

- Come on. Let's see where they go.

- Creepy, cobweb-filled catacombs.

- And that's not all. Look!

- Coffins! 5 of them.

- And the empty one's, like, dog-shaped.

- Dog-shaped?

- Zoinks! They're opening.

- It's them! The cousins.

- It's the Phantom Shadow.

- Only he's not a shadow. He's a green ghost.

- Now there's two of them.

- He's fainted.

- Grab Scooby!

[...]