Its and It's

Since some people have asked . . . and some people need to know.

Its means possesive. For example: I have a dog. There's its house.

Its is like his or hers. The his or hers means possesive, so no apostrophe is necessary.

On the other hand, it's is a contraction of it is. For example: I have a dog. It's a fine animal.

If you can change it to it is and the sentence still makes sense, then you mean, it's.

If you change it to it is and the sentence doesn't make sense (e.g. I have a dog. There it is house.) then you mean its.

Have a nice day!