US pets is one of the Internets largest suppliers of pet stuff.  Lots of pet supplies at great prices.  Free shipping and currently 15% off everything(the US pets coupon is right on the US Pets website).  I found that the selection was not quite as good as petsmart, however the pricing was better on quite a few items.  I have purchased some food, advantage flea and Heartguard heartworm pills.  On a side note Heart worm pills is very Important!!!  I highly recommend this site, at least for a look to see if the sell the food and or supplements that you feed your cat or dog.  Greenies dental chews are a great price at US pets.