How Much Water Should a 150 lb Dog Drink a Day?

150 fl oz/day

150 lb dog · ≈ 18.8 cups · 4.44 litres per day

Daily water for a 150 lb dog

Situation	fl oz	Cups	Litres
Typical day	150	18.8	4.44
Low (wet food diet)	75	9.4	2.22
Hot day / active	225	28.1	6.65
Upper normal limit	300	37.5	8.87

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

How much water should a 150 lb dog drink?

About 150 fl oz (18.8 cups, 4.4 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 300 oz (2 oz/lb) a day can signal diabetes, kidney disease or Cushing’s – see your vet.