Catizzadi, allow me to be frank...
I think your website design is a bit yesterday and some choices of color and font are inappropriate. However, as Doink said, it's actually a pretty good effort from a non-web designer

The followings are what I think you can improve:
1. Bear in mind, 'simplicity' is the key in design
2. The frame outline should be removed
3. The blink blink stars are not necessary
4. Replace the menu buttons with other cooler hyperlinks
5. Pictures are too small
6. Change the background color. I cannot associate black with pets
7. Replace the rainbow banner lines with something else
8. Too many different types of font are used. Try the most 2 types

This is merely my feedback, no hard feeling
I am no designer. If you think I talk nonsense, just ignore me