Yes, all smilies are free to use however you wish. All you have to do is copy and paste the URLs below the smilies.

Q. How do I use a smilie on a forum

1. Copy the smilie's URL.
2. Paste the URL into your forum post.
3. Enclose it with [img] and [/img].

Your finished code should look like this:

[img]http://www.linkchaos.com/smilies/animal0001.gif[/img]

Q. How to get a Smilie's url

. Click inside the white text-box below an image.
. Select and copy the whole character string.