hey, i really like it. nice clean with cool colour, maybe its a nice change not to have adds everywhere but if you build it all up you shouldnt have a problem making a little extra change. just a suggestion maybe its been breed into me from the sites i use but how about having the categorys higher up the page, say left to the videos just so they can see straight away. so if they want to look at animals they can go to that straight away. just a suggestion, i think the site is cool. hope it works out for you.
I would avoid using Feedburner which shows only 1 reader of your blog as of now and use other graphics.
i agree with the others maby a short overview of the videos? that also may help seo for your site. Also i dont really like the background
Design is OK... I really like the domain name! You should probably have some text on the category pages for SEO purposes...