It's Booky Baby taking the lead.
3 seconds sound clip from the The Cat from Outer Space (1978) movie soundboard.
You can hear this line at 00:46:23.978 in the Blu-ray version of the movie.
Quote context
[...]
- Sweet Jake! I should have bet on the Metropolitan Opera.
- Daddy's Poppa moving up, and Seabottom.
- It's Attaboy Star by a length. Booky Baby, Denny's Doll and Seabottom.
- Sweet Jake's finished eating and started running. And, ladies and gentlemen, is he running!
- But not even Silky Sullivan could come from this far behind.
- It's Booky Baby taking the lead.
- Daddy's Poppa moving into second, and Attaboy Star.
- And making up incredible ground is Sweet Jake.
- I have never seen anything like this. But can he catch the pack?
- At the top of the stretch. It's Booky Baby in the lead. Daddy's Poppa.
- And turning for home, it's Sweet Jake. Come on, Jake. Come on. Give him the whip, dummy.
[...]