No, the word ‘cat’ is not a proper noun; it is a common noun.
Proper nouns are specific names of people, places, or organizations, such as ‘Sarah,’ ‘Paris,’ or ‘Microsoft.’ They always start with a capital letter. In contrast, common nouns refer to general items or concepts and are not capitalized unless they begin a sentence.
For instance, when we talk about any cat or cats in general, we use ‘cat’ as a common noun. However, if we refer to a specific cat by name, such as ‘Whiskers,’ then ‘Whiskers’ becomes a proper noun.
In summary, ‘cat’ is a generic term for a type of animal, hence it is classified as a common noun.