Punctuation Rules

I like, cats dogs and birds. I like cats dogs and birds. I like cats dogs, and birds. I like cats, dogs, and birds.

Contraction of it is Plural None of the above Possession

To introduce a list To show possession To join two independent clauses To end a sentence

The dogs' bone The dog's bone The dogs bone The dogs's bone

Join two sentences informally Show possession End a question Introduce a list or explanation