What to Feed a Border Collie

A Border Collie's calorie needs swing with its activity more than almost any breed. A dog working sheep all day or running agility burns far more than a companion Collie that gets a couple of walks, even at the same weight. There is no single “Border Collie portion.”

A rough starting point for an adult is around 1.5 to 2.5 cups of quality dry food a day, split into two meals, but treat that as a number to calibrate, not a rule. The breed runs about 30 to 55 lb, firmly medium-sized.

Feed to body condition. Use the WSAVA body condition score: aim for a lean, athletic 4 to 5 out of 9, where you feel the ribs easily and see a clear waist. Adjust the portion up for a hard-working dog and down for a quieter one, and check every few weeks. A well-exercised Collie stays lean naturally; an under-exercised one can gain weight, though an under-exercised Border Collie usually has bigger behaviour problems than its waistline.

There is no single best bag, but there is a sound way to choose one, from the WSAVA nutrition guidelines.

Choose a medium-breed adult formula with enough calories for an active dog. Skip large-breed foods, which are built for giant-breed growth. Look for a named animal protein, adequate protein and fat for an athlete, omega-3s for the coat, the AAFCO complete-and-balanced statement, and a stated calorie count so you can portion accurately.

Pick a brand that does the science. Ask whether the company employs a board-certified veterinary nutritionist, runs feeding trials, owns its plants, and will share a full nutrient analysis. The big makers that meet this bar are the safe default: Purina Pro Plan (whose Sport line suits hard-working dogs), Royal Canin, Hill's Science Diet, and Eukanuba, with Acana a popular Canadian option. A genuinely hard-working dog often does best on a higher-calorie active or performance formula, so it can eat a sensible volume and still hold weight.

A puppy or all-life-stages formula for small-to-medium breeds, not a large-breed puppy food. Large-breed puppy diets slow giant-breed growth, which a Border Collie does not need.

Follow the standard puppy feeding timeline: about four meals a day from 6 to 12 weeks, three by 3 to 6 months, and two by 6 to 12 months, moving to adult food around 9 to 12 months.

A growing, high-drive puppy needs steady fuel, but keep it lean: a lean body condition protects developing joints and builds good habits. Feed measured meals rather than leaving food down, and put as much energy into the puppy's brain (training, sniffing, problem-solving) as into its body. A tired Border Collie puppy eats and rests well; a bored one finds trouble.

If you read about Border Collies, you will hit the MDR1 gene quickly, and it is worth understanding, but it is easy to misplace it as a diet concern. It is not one.

MDR1, the multidrug-resistance mutation, turns up across the herding breeds. It is actually much more common in Rough Collies and Australian Shepherds than in Border Collies, but it can occur in a Border Collie, so it is worth knowing about. It changes how a dog's body handles certain medications, including some anti-parasite drugs at high doses and a few sedatives, which can build up to dangerous levels in a dog with the mutation. It has nothing to do with the food in the bowl, and there is no special “MDR1 diet.”

The practical step is medical, not nutritional: ask your vet about MDR1 testing, available through Washington State University's veterinary lab, so that any medication your dog is given is MDR1-safe. Once your vet knows the dog's status, you feed it exactly like any other healthy Border Collie.

Bloat (gastric dilatation-volvulus) mainly threatens large, deep-and-narrow-chested breeds like Great Danes and Shepherds. A medium, athletic Border Collie is not in that high-risk group, so this is one worry you can mostly set aside.

The only sensible, non-alarmist habit: if your Collie bolts its food after exercise, a slow-feeder bowl helps it slow down. Otherwise, normal feeding is fine.

Keep these toxic foods away from a Border Collie completely: chocolate, grapes and raisins, xylitol (in sugar-free gum, some peanut butters, and baking), onions and garlic, macadamia nuts, alcohol, and cooked bones. Call your vet or a pet poison helpline right away if your dog eats any of them.

One more to weigh: legume-heavy grain-free diets. The FDA has investigated a possible link between them and a heart condition (DCM) but has not proven it. There is no reason to feed grain-free unless your vet diagnoses a grain allergy.

Make it a vet conversation. Raw is popular in working-dog and sport circles, often sold on promises of energy and coat shine, but those benefits are not documented in controlled studies, and the major veterinary bodies are cautious.

The AVMA discourages feeding raw or undercooked animal protein because of the pathogen risk to the dog and the people in the home, and the WSAVA finds no documented benefit over a balanced cooked or commercial diet. A working dog's energy comes from enough calories of a complete diet, not from raw in particular. If you still want to feed raw, use a complete commercial product or a recipe from a board-certified veterinary nutritionist, handle it safely, and check with your vet first.

Every brand worth feeding a Border Collie is easy to find in store and online:

• Pet specialty chains (Pet Planet, Tail Blazers, Tisol, and similar). Carry Pro Plan (including the Sport line), Royal Canin, Acana, and most premium lines.
• Pet Valu and PetSmart. National chains that stock the major adult and active-dog formulas.
• Your vet clinic. The place for any therapeutic or prescription diet.
• Costco. Kirkland Signature is a solid everyday budget option.

Buy a bag size you will finish reasonably fresh and keep it sealed in a storage bin. Online, the same brands ship to your door, and the active-dog formulas are easy to set on a recurring delivery.