Yep, they may be the world's most independent creatures, often scornful, superior, unpredictable, and affectionate only when it comes down to the tuna, but we still love our cats. Here are five products for a tree-hugging kitty.

1) BioBag Cat Box Liners
The biodegradable bag revolution is underway, and that means the litter box can get one too. Mess-free BioBag cat box...