Collie (Rough Collie) vs Saint Bernard: Which Suits Your Home?

The Saint Bernard is in a different weight class entirely -- 120-180 pounds and 26-30 inches, officially a giant breed, against the Collie's large-breed 50-75 pounds and 22-26 inches. That's potentially more than double the Collie's weight. If you're picturing what "giant breed" actually means in your living room, the Saint Bernard is the one that answers that question.

Despite its size, the Saint Bernard rates low (2/5) for exercise need against the Collie's moderate (3/5) -- giant breeds are often surprisingly sedate, content with shorter walks rather than sustained activity. That's good news for owners worried about matching a huge dog's exercise demands, but don't mistake low exercise need for low space requirements; a 150-pound dog still needs room to lie down comfortably.

Grooming actually favors the Saint Bernard, moderate (3/5) against the Collie's high (4/5), despite its size. Shedding ties at high (4/5) for both, though, so expect a serious amount of hair regardless of which one you choose -- more concentrated brushing sessions with the Collie's longer coat, more sheer volume with the Saint Bernard's larger body. Either way, a good vacuum is not optional equipment here.

Neither breed suits apartment living, but the numbers actually favor the Collie here: low (2/5) against the Saint Bernard's very low (1/5). Barking favors the Saint Bernard, though, low (2/5) versus the Collie's moderate (3/5) -- it's a famously calm, quiet breed indoors despite its size. If you have the space, the size difference matters less than you'd expect for peace and quiet.

The Collie rates well ahead on trainability, very high (5/5) against the Saint Bernard's moderate (3/5), and also edges ahead for first-time owners, high (4/5) versus moderate (3/5). Saint Bernards are famously gentle but can be stubborn and slow to respond to commands, and their sheer size makes consistent training more important, not less, from puppyhood on. A giant breed that skips training is a much bigger daily problem than a smaller one.

Both breeds tie at very high (5/5) with kids, high (4/5) with other dogs, and high (4/5) with strangers -- a genuinely even matchup on temperament despite the size gap. The Saint Bernard's reputation as a gentle giant holds up in this data; it scores just as warmly with kids as the smaller, herding-bred Collie does. If temperament alone were the deciding factor, this pairing would be a coin flip.

The Collie's expected lifespan, 11-14 years, runs meaningfully longer than the Saint Bernard's 8-10 -- a common pattern for giant breeds, whose size shortens their typical lifespan. Health overlap covers two conditions: hip dysplasia and bloat, both shared. Bloat in particular is worth taking seriously with the Saint Bernard, whose deep chest is a classic risk factor, alongside its own listed risks of elbow dysplasia, dilated cardiomyopathy, and entropion.

The Saint Bernard is the most expensive breed in this comparison: very high (5/5) overall cost level against the Collie's moderate (3/5), $150-$310 monthly against $100-$200, and $2,200-$4,200 in year one against $1,500-$2,800. Feeding a 150-pound dog alone costs meaningfully more than feeding a 60-pound one. Budget for the giant-breed premium before you fall for the giant-breed charm.