that's a great idea too! In fact, you might just be able to substitute any of the roll foods (natural balance or rollover) for the jerky or even for the liverwurst. As long as the moisture and consistency are similar, it shouldn't affect the cake at all.
If I was doing the cake, because Odin has allergies, I would use a canned dog food that Odin could eat in the place of the liverwurst, and salmon rollover (new) as the jerky, and veggie baby food.
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