How Much Water Should a 85 lb Dog Drink a Day?

85 fl oz/day

85 lb dog · ≈ 10.6 cups · 2.51 litres per day

Daily water for a 85 lb dog

Situation	fl oz	Cups	Litres
Typical day	85	10.6	2.51
Low (wet food diet)	42	5.3	1.26
Hot day / active	128	15.9	3.77
Upper normal limit	170	21.2	5.03

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

How much water should a 85 lb dog drink?

About 85 fl oz (10.6 cups, 2.5 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 170 oz (2 oz/lb) a day can signal diabetes, kidney disease or Cushing’s – see your vet.