Mad dog!
2 seconds sound clip from The New Adventures of Winnie the Pooh - A Pooh Day Afternoon (S4E3).
You can hear this line at 00:16:25.423 in the Blu-ray version of the episode.
Quote context
[...]
- The neighbors will be back soon. If we're lucky, they'll never know what happened.
- Then, after we return the dog, we could return the cart.
- Boy, I never thought taking care of a dog would be so tough.
- Home at last! And we're gonna make it in time.
- You can stop squeezing the horn now, Piglet.
- Mad dog!
- I can't believe this happened. They trusted me with their dog, and I lost him twice.
- No, Pooh. I never should have left the dog alone. It was my responsibility.
[...]