How Much Water Should a 80 lb Dog Drink a Day?

80 fl oz/day

80 lb dog · ≈ 10.0 cups · 2.37 litres per day

Daily water for a 80 lb dog

Situation	fl oz	Cups	Litres
Typical day	80	10.0	2.37
Low (wet food diet)	40	5.0	1.18
Hot day / active	120	15.0	3.55
Upper normal limit	160	20.0	4.73

Rule of thumb only; wet food supplies part of the water. Puppies need water available at all times.

How much water should a 80 lb dog drink?

About 80 fl oz (10.0 cups, 2.4 L) a day – the common rule of 1 oz per lb of body weight. Hot weather, exercise, nursing and dry food raise it.

When is drinking too much a concern?

Consistently more than about 160 oz (2 oz/lb) a day can signal diabetes, kidney disease or Cushing’s – see your vet.