Check out the ingredient list on your dog's kibble bag...
Read the first 5 ingredients.
The worst dog foods list wheat, corn, and soy products (GMOs!), as well as meat-by-products (the waste after removing muscle meat!) within the first 5 ingredients.
If the kibble includes these products, it will probably also include artificial colors, artificial flavors, and artificial preservatives (chemicals!)... names that we can't even pronounce and definitely don't recognize...which would be listed farther down the list.
I have made a list of my least favorite (and commonly seen) kibble brands based on ingredient choice and/or recall history (due to toxic contamination), in alphabetical order:
Hill's Science Diet
Kibbles 'n Bits
Rachael Ray Nutrish
My favorite kibble brands are:
Nature's Variety Instinct Original
If you'd like to research any kibble brand, this is a great place to start: www.dogfoodadvisor.com
Other great options include freeze-dried, air-dried, or raw food.
If you'd like to switch to raw food, I recommend: www.texastripe.com
(This is what my dog's eat!)
Any and all of my favorite products, including food products, are listed here.
All for now!