Hi Zahraannur,
Thanks for your participation!
It appears that your blog has filtered out part of the PetFinder code which displays the animals for adoption. I've investigated into Wordpress blogs and it appears that they do not allow Javascript, so the code would not appear properly there.
So for now it would only work linking to PetFinder using a static image like our logo. Maybe you can place a more prominent image/link at your website, as well as post a blog entry about it and link to some of the cute pet images at our website.
Let me know how it goes!