Final answer:
The comma in the sentence is used correctly. It separates the two coordinate adjectives, 'snarling' and 'drooling', which both describe 'raccoon'.
Step-by-step explanation:
Yes, the comma in the sentence 'The snarling, drooling raccoon in the cage scared me.' is used correctly. The comma is used to separate the two adjectives (snarling and drooling), that are describing the same noun (raccoon). This is called coordinate adjectives. If two adjectives are interchangeable and the sentence still makes sense, then they are coordinate adjectives, and a comma should be used to separate them.
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