Well, if dogs are like people, they can build up an "intolerance" for certain foods that they eat repeatedly. I never thought about it much before but it seems to be more likely in dogs where we feed them the exact same menu every day.sessa35 said:Paul mentioned perhaps a long-standing allergy to chicken--which would have built over the year and then "burst" onto the scene again with the stress of the digestive system...hmmm...still pondering that one...
Does the brand you like, make a lamb formula? Maybe the switch would make sense. I don't know of any commercial fish based feed but there might be some.
I'm sure doodle owners with good advice will chime in.