3. Supplements
So far our list of pet best sellers in the USA comprised mostly products demanded by the latest trend. It would be a time to remind you that our list combines actual market tendencies and solid facts telling us pet owners spend a lot of their funds on medicines, vitamins and supplements. After a thorough research done by Watson and coming hand in hand with the humanization trend, Americans are mostly buying these for the elderly pups.The most searched one is a joint supplement, as claimed in ConsumerHealthDigest . Now, let’s see the top two on our list of best selling pet products in America.