I too switched from Eukanuba to Nutro lamb and rice when he was 10 months old.. I recently tried the Nutro Ultra,,thinking it would be even better,, BUT OH did he get the runs,, I even mixed in just a little with his old food.
I dont know if I will try to mix it again..or just stick with the Nutro Lamb and rice formula?? Of course now, I have a full bag of the Ultra.
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Rhonda, Bailey, Josie and my angel Bella Rue'
"Until one has loved an animal, a part of one's soul remains unawakened."
~Anatole France~