Saved By The Chipmunks

Altho they look alike (neither one has a big red nose) and they aren't named, it is unmistakably Chip and Dale making their first screen appearance here with Pluto.
The guys have taken over a gun turret to crack walnuts and acorns in.
Pluto's one sightedness is easily overtaken by the endles jabbering of the chipmunks and trying to understand them.
"Uh oh, it's that beast again," one of them says at one time.
Great intro to these guys who would return for better cartoons. Sadly Pluto doesn't have any that can be deemed classics.