French Spaniel vs Mastiff (English Mastiff): Which Suits Your Home?

Put a French Spaniel next to a Mastiff and the difference is almost comedic -- 45 to 60 pounds against 120 to 250. A Mastiff can outweigh the French Spaniel by four times its own body weight and stands up to 32 inches at the shoulder versus the French Spaniel's 24. This is a genuine giant-breed comparison: think about doorframes, car trunks, and vet scales rated for the weight before deciding based on temperament alone.

Despite its bulk the Mastiff is the calmer of the two -- exercise need rated low (2/5) and energy level low (2/5), a dog content with a couple of walks and a lot of couch time. The French Spaniel rates the opposite: very high exercise need (5/5) and high energy (4/5), bred for a full working day in the field. If your ideal dog naps most of the afternoon, the Mastiff fits; if you want a running partner, it doesn't.

Grooming favors the Mastiff slightly -- low (2/5) against the French Spaniel's moderate (3/5) -- since its short, dense coat needs less brushing than the Spaniel's medium feathered one. Shedding comes out tied at moderate (3/5) for both, so neither is the coat to pick if you want a shed-free home. The Mastiff's drooling, not captured in the shedding number, is worth researching separately before you commit.

Neither breed suits a small apartment -- both score low (2/5) on apartment suitability, though for different reasons: the Mastiff's sheer size needs floor space, while the French Spaniel's exercise needs mean it wants a yard to burn energy in. Barking runs low for both, with the Mastiff barely making a sound (1/5) against the French Spaniel's low (2/5). Alone time tips toward the Mastiff, which tolerates solitude moderately (3/5) better than the French Spaniel (2/5).

The French Spaniel trains more readily -- high (4/5) versus the Mastiff's moderate (3/5) -- and also rates better for first-time owners (moderate 3/5 against the Mastiff's low 2/5). A Mastiff's size makes early obedience work non-negotiable; an untrained 150-pound dog is a different problem than an untrained 50-pound one. Neither is really a beginner's dog, but the French Spaniel gives a new owner more margin for error.

With kids, the Mastiff actually scores highest of the two -- very high (5/5) against the French Spaniel's high (4/5) -- matching its reputation as a gentle giant. The French Spaniel does better with other dogs (high 4/5 versus the Mastiff's moderate 3/5) and with strangers (high 4/5 versus moderate 3/5), so it's the more outgoing, sociable dog of the pair despite being smaller.

Lifespan favors the French Spaniel here -- 10 to 12 years against the Mastiff's 9 to 11 -- typical of the size gap between them, since giant breeds simply don't live as long. The Mastiff's health list is heavier too, with ten flagged conditions including cancer, bloat, dilated cardiomyopathy, and bone cancer, against the French Spaniel's five (hip dysplasia, epilepsy, and eye conditions among them). Bloat in particular is worth discussing with a vet given the Mastiff's deep chest.

The Mastiff costs noticeably more to keep -- a cost rating of very high (5/5) against the French Spaniel's moderate (3/5), and it shows in the numbers: $150 to $350 a month versus $100 to $200, and $2,200 to $4,500 in the first year versus $1,400 to $2,900. Food alone for a 200-pound dog adds up fast, before you factor in a bigger crate, bigger bed, and bigger vet bills.