1. It's vs. Its If you're confused by these two little words, you‘re not alone. This mini-lesson should help you sort out the difference.

2. It's is a contraction for it is or it has. Its is a possessive pronoun meaning, more or less, of it or belonging to it. And there is absolutely, positively, no such word as its'.

3. A simple test If you can replace it's in your sentence with it is or it has, then your word is it's; otherwise, your word is its. Examples It's been good to know you. Contraction: it has It's a bird! It's a plane! Contraction: it is It’s - Contraction

4. Its - possessive Another test Its is the neuter version of his and her. Try plugging her into your sentence where you think its belongs. If the sentence still works grammatically (if not logically) then your word is indeed its. The dodo bird is known for its inability to fly. Possessive pronoun: its inability = the dodo bird's inability