Here is reply I received on March 18, 2010:
Thank you for contacting Natura Pet Products. I am currently trying to get information on what the seaweed (carrageenan) is boiled with. Thank you for your patience.
We are aware of the current studies regarding carrageenan and the possibilities that it may cause gastrointestinal distress in dogs and colon cancer in humans.
While we continue to monitor the current research, we feel that carrageenan is a safe ingredient to use in our products. Carrageenan is widely used in both the human food industry and the pet food industry and has been proven to be a safe and approved ingredient.
Best regards,
##########, Licensed Veterinary Technician
Natural Product Advisor
custserv@naturapet.com800-532-7261
(Mods if this is in wrong place, pls move. Thx)