Also も

mo means "also" or "too" and like other particles, it is placed after the word it modifies. Let's see some examples:

PERSON A: 私 は ねこ が すき。
            watashi wa neko ga suki.
             I like cats.

PERSON B: 私 は ねこ が すき、そして いぬ  すき。
            watashi wa neko ga suki, soshite inu mo suki.
             I like cats, and I also like dogs.
                [to review soshite; the mo after inu replaces ga.  You can't say "ga mo"]