
Thier motions should be solid.
A dog on dry food of 20kg should be drinking around a litre of water a day. How much water are you putting with the food? If you keep a water bowl down at all times, changing the water twice a day at least they should drink what they need. if it was one dog I would think there might be a problem but with two I suspect they dri8nk as much as they need. do you have a water source on their normal walks, like a river. This might account for them seeming not mto drink?