- Now Bob Miller's Great Dane is a shoo-in.
- Great Dane?
- Did you say Great Dane?

7 seconds sound clip from Scooby-Doo, Where Are You! - Decoy for a Dognapper (S1E5).

You can hear this line at 00:03:07.671 in the Blu-ray version of the episode.

Quote context

[...]

- Here's another bulletin. Buck Masters, the owner of the first dog stolen, has just offered a $500 reward.

- Gang, we've just been handed our next mystery.

- And we'll begin with Mr. Buck Masters.

- Yeah, yeah, yeah!

- That's right. I've decided not to pay the ransom. I'd rather use the money to catch those crooks.

- I was sure to win first prize at the County Dog Show this year.

- Now Bob Miller's Great Dane is a shoo-in.

- Great Dane?

- Did you say Great Dane?

- Yes. Bob's been grooming his dog for this show all year.

- But if that's the case, isn't the Great Dane in danger? He could be dognapped.

- Don't worry. I warned Bob, and he only takes the dog out for exercise at night, and then only on Beach Boulevard near the police station. It seems safe enough there.

- From now on, all dog owners must be on their guard.

[...]