(for one thing I'd have to carry dog food in an evacuation scenario).
Your dog needs a pack so he/she/it can carry his/her/its own food.
Be real careful putting a pack on your dog. There are serious questions that a vet needs to take part in. I have seen several dogs who look perfectly capable of carrying a light weight end up being the weight carried.
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I do the things that I must, and really regret, are unfortunately necessary.
RIP OBG