While "squirrel eat fruits" is grammatically correct, it's a bit awkward. The plural "fruits" suggests a wide variety, whereas squirrels generally eat individual pieces of fruit.
Here's a breakdown:
* Squirrel eat fruits: Grammatically correct but sounds unnatural.
* Squirrels eat fruit: More natural and accurate, implying that squirrels eat various kinds of fruit.
* Squirrels eat fruits: Also correct, but "fruits" implies a specific collection of fruit types.
Ultimately, both "squirrels eat fruit" and "squirrels eat fruits" are grammatically correct, but "squirrels eat fruit" is more natural and commonly used.