He fed him whole sides of beef and turned the pup loose in the junkyard.
6 seconds sound clip from the The Sandlot (1993) movie soundboard.
You can hear this line at 00:29:37 in the Blu-ray version of the movie.
Quote context
[...]
- The legend of The Beast goes back a long time before any of us could even pick up a baseball.
- Back to a place called Mertle's Acres.
- So Mr. Mertle, the guy that used to own the place, got him this new pup from the dog pound.
- He fed him whole sides of beef and turned the pup loose in the junkyard.
- And so, in a few weeks, the pup grew into The Beast.
- And he did, and he liked it a lot!
- The Beast was the most perfect junkyard dog that ever lived.
[...]