I'm surprised no one has mentioned contamination in fish oil from mercury, lead, dioxins, furans, PCB's, etc. Those are just as toxic for a dog as they are for humans!
A while back I did quite a bit of research on the various brands of fish oil for humans. There is an organization called International Fish Oil Standards (IFOS) that performs independent studies on many popular brands of fish oil.
The brand that I found that was both readily available and passed (by a significant margin) the IFOS standards is called 'Nordic Naturals'. This is the brand my wife and I have been using for a while. You can get it at pretty much any health food store (including Wholefoods), but I've found it's cheapest at Vitamin Shoppe.
Anyway, recently I started looking into fish oil for pets, and my first inclination was to check Nordic Naturals. Sure enough, they have a pet line!
Here's the URL:
http://www.nordicnaturals.com/PetOwners/PetOwners.asp
You can see their test results here:
http://www.nordicnaturals.com/images/3rdpartypet.gif
If you're interested, you can read the IFOS consumer reports yourself here:
http://www.nutrasource.ca/ifos_new/index.cfm?section=ifosconsumer
A while back I did quite a bit of research on the various brands of fish oil for humans. There is an organization called International Fish Oil Standards (IFOS) that performs independent studies on many popular brands of fish oil.
The brand that I found that was both readily available and passed (by a significant margin) the IFOS standards is called 'Nordic Naturals'. This is the brand my wife and I have been using for a while. You can get it at pretty much any health food store (including Wholefoods), but I've found it's cheapest at Vitamin Shoppe.
Anyway, recently I started looking into fish oil for pets, and my first inclination was to check Nordic Naturals. Sure enough, they have a pet line!
Here's the URL:
http://www.nordicnaturals.com/PetOwners/PetOwners.asp
You can see their test results here:
http://www.nordicnaturals.com/images/3rdpartypet.gif
If you're interested, you can read the IFOS consumer reports yourself here:
http://www.nutrasource.ca/ifos_new/index.cfm?section=ifosconsumer