Picked up a 100oz bladder, the antidote (short) for 15 bucks, but now looking for carry options. I have some other Camelbaks, but don't think I can just throw this in with the narrow bladders

This purchase came about trying to find a solution to now having 2 dogs... went on 5+ mile hike and ran out of water.

So looking for ideas...a flat small pack for the antidote bladder designated for the dogs, (not that I wouldn't drink from it) or something I can use both the narrow 70oz and the 100 oz bladder