An independent 3rd party tested over 1000 different pet foods for toxins and contaminants...

They reported on 5 in particular which can cause cancer:

• Lead

• BPA

• Mercury

• Arsenic

• Cadmium
  

Most are heavy metals: environmental contaminants that can make their way into the food chain. 

Mercury for instance concentrates in in fish, BPA leaches from plastic, and tin cans contain Lead, Arsenic and Cadmium??

Cadmium is a lesser known heavy metal, but is a concerning carcinogen

Here is what the National Cancer Institute has to say:

Cadmium and its compounds are highly toxic and exposure is known to cause cancer. It is primarily associated with human lung, prostate, and kidney cancers, and recently pancreatic cancer. It has also been associated with cancers of the breast and urinary bladder.

The Clean Label Project found 200% more Cadmium in pet food in comparison to cigarettes! 

94% of all pet food exceeded the EPA maximum drinking water level...
What this all means is that if you are feeding your dog a commercial food you are possibly feeding Cadmium, a known carcinogen.

So what do you feed? We need some far more serious regulations/testing for pet food Toxins.

Less kibble. Some homemade, some raw.

Consider adding in a supplement that may counteract the detrimental effects from some of these toxins.

Here's one that I like and Tula eats :-)