Also も

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　も　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"]

PERSON C: 私　も　ねこ　と　いぬ　が　すき。
            watashi mo neko to inu ga suki.
               I also like cats and dogs.

NOTE: 私も watashi mo by itself means "Me too."