How many calories does a neutered adult Brittany need?

At 35.1 lb, the verified feeding table lists 892 kcal per day for a Brittany (resting energy 557 kcal times a factor of 1.6).

How many calories does an intact adult Brittany need?

At 35.1 lb, the verified feeding table lists 1003 kcal per day for a Brittany (resting energy 557 kcal times a factor of 1.8).

How many calories does a Brittany puppy under 4 months need?

At 35.1 lb, the verified feeding table lists 1672 kcal per day for a Brittany (resting energy 557 kcal times a factor of 3).

How many calories does the weight-loss row list for a Brittany?

At 35.1 lb, the verified feeding table lists 557 kcal per day for a Brittany (resting energy 557 kcal times a factor of 1).

Feeding calculator

How much to feed a Brittany

A 35 lb Brittany is the starting weight on this calculator, taken from the verified adult range (30–40 lb).

Last reviewed November 1, 2026.

Brittany dog — Photo: Ron Armstrong (SheltieBoy) from Helena, MT, USA · CC BY 2.0 · Wikimedia Commons

Daily portion

Dog food calculator: 891 kcal; 2.55 cups · 305 g · 2 meals
Merck chart, Adult, neutered: 891 kcal; Resting energy 557 kcal × 1.6, before the calculator's activity and size adjustment.

Lifespan12–14 years

Weight30–40 lb

SizeMedium GroupSporting Group

Resting energy at that weight is about 557 kcal per day. The Merck neutered-adult factor of 1.6 puts maintenance near 891 kcal before activity is added. The dog food calculator on this page uses that same resting-energy formula, then applies the activity and size adjustments from the main dog food calculator.

Reading the portions

Compared with other single-size medium breeds, that neutered-adult portion is 17 kcal higher than the 874 kcal for an average medium breed at 34.1 lb.

Portions are a starting estimate. Brittany individuals can vary by body condition, neuter status, and how much they work. Adjust the bowl from what you see on the ribs, not from the table alone.

Feeding table from the verified weight chart

RER=70*kg^0.75; MER=RER*factor. Starting estimate only; individuals vary up to 50%; adjust by body condition

Brittany adults maintenance energy

Swipe sideways to read every column.

Weight	RER	Adult, neutered	Adult, intact	Puppy under 4 months	Puppy 4 months and older	Weight loss
30 lb (13.6 kg)	496 kcal	793 kcal	892 kcal	1487 kcal	991 kcal	496 kcal
32.4 lb (14.7 kg)	526 kcal	841 kcal	946 kcal	1577 kcal	1051 kcal	526 kcal
35.1 lb (15.9 kg)Current weight	557 kcal	892 kcal	1003 kcal	1672 kcal	1115 kcal	557 kcal
37.5 lb (17 kg)	586 kcal	938 kcal	1055 kcal	1758 kcal	1172 kcal	586 kcal
39.9 lb (18.1 kg)	614 kcal	983 kcal	1106 kcal	1843 kcal	1229 kcal	614 kcal

The highlighted row follows the weight in the calculator above.

Frequently asked

Questions from the breed record

Use the verified adult weight for a Brittany: 30–40 lb. This page starts the calculator at 35 lb.

Sources

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