What is a pronoun for kittens?

The pronoun that takes the place of the singular noun 'kitten' is it.

The pronoun 'it' can function as a subject or an object in a sentence.

If the gender of the kitten is known, the pronouns that take the place of the noun 'kitten' are he or she as a subject, and him or her as an object in a sentence.

Examples:

• I got a kitten for my birthday. It is six weeks old. (the pronoun 'it' is the subject of the second sentence)
• I have a new kitten. My mother got it for me. (the pronoun 'it' is the direct object of the verb 'got')
• I got a kitten for my birthday. He is six weeks old.
• I have a new kitten. My mother got him for me.
• I got a kitten for my birthday. She is six weeks old.
• I have a new kitten. My mother got her for me.