I like the design, but I would be considering changing a few things (I always seem to say that )

1. The text on the front page is quite strange, try changing it to something like Arial, or something like that.

2. You have a mass of code that's in the wrong place. It's something to do with Google and belongs in the header tag, move it so it's before the </head> near the top.

You have loads of CSS and HTML errors, but without knowing how much of the design you did youself, and how much is done via freewebs, I'm not sure you can correct it all.

Altogether it's a very nice website, the colour (or lack of) works really well, but perhaps you could change the title so you've got a pic of a dog on there, after all, it is a pet website.