Does mixed breeding change the size?
No -- this mix still runs 80-135 lbs, the same range as a purebred Rottweiler.
French Spaniel or Rottweiler Mix? On paper they differ most on good with other dogs, and on the scales Rottweiler Mix is the heavier at 80–135 lbs. Here is how the two compare on everything that shapes an ordinary week.


This is for someone already down to French Spaniel and Rottweiler Mix and deciding between them. For this pair the decision usually turns on good with other dogs and friendly to strangers, so those are covered first and in most detail. Both rate 2/5 for flats, so housing does not settle this one. It is written for the decision rather than the breed history.
Between French Spaniel and Rottweiler Mix, good with other dogs is what separates them, and Rottweiler Mix is the lower-effort dog of the two to keep.
Choose French Spaniel if this is your first dog, there are young children at home and you already have another dog.
Choose Rottweiler Mix if you do not want a standing grooming appointment, your walking routine is modest and the dog will be alone during the working day.
| Feature | french spaniel | rottweiler secondary | Winner |
|---|---|---|---|
| Size class | medium | large | Equal |
| Weight | 45–60 lbs | 80–135 lbs | Equal |
| Height | 21–24 in | 22–27 in | Equal |
| Lifespan | 10–12 years | 9–10 years | french spaniel |
| Exercise need | Very high (5/5) | High (4/5) | rottweiler secondary |
| Grooming need | Moderate (3/5) | Low (2/5) | rottweiler secondary |
| Shedding | Moderate (3/5) | Moderate (3/5) | Equal |
| Energy level | High (4/5) | Moderate (3/5) | Equal |
| Barking | Low (2/5) | Low (2/5) | Equal |
| Apartment suitability | Low (2/5) | Low (2/5) | Equal |
| Good for first-time owners | Moderate (3/5) | Low (2/5) | french spaniel |
| Tolerates being alone | Low (2/5) | Moderate (3/5) | rottweiler secondary |
| Trainability | High (4/5) | High (4/5) | Equal |
| Good with kids | High (4/5) | Moderate (3/5) | french spaniel |
| Good with other dogs | High (4/5) | Low (2/5) | french spaniel |
| Friendly to strangers | High (4/5) | Low (2/5) | french spaniel |
| Cost level | Moderate (3/5) | High (4/5) | french spaniel |
| Coat | Medium, flat and feathered | Short, dense double coat | Equal |
| Origin | Various | Various | Equal |
| Typical monthly cost | $100–$200 | $110–$240 | Equal |
| Typical first-year cost | $1,400–$2,900 | $1,700–$3,200 | Equal |
Don't let the word mix fool you on size -- this Rottweiler Mix carries the same 80-135 lb, 22-27 inch frame as a purebred Rottweiler, against the French Spaniel's 45-60 lbs and 21-24 inches. Mixed parentage hasn't trimmed the scale here at all; you're still looking at a dog more than double the Spaniel's typical weight.
Exercise need sits a notch below the typical purebred Rottweiler rating, at High (4/5) against the Spaniel's Very High (5/5). Energy level itself comes in at Moderate (3/5) for the mix versus High (4/5) for the Spaniel -- a slightly calmer temperament day to day, even with comparable exercise demands. That combination of lower energy and lower exercise need can make the mix feel like the easier dog to keep up with, on paper at least.
Grooming stays low for the mix at 2/5, easier upkeep than the Spaniel's Moderate (3/5). Shedding, though, ties at Moderate (3/5) for both dogs -- the mix doesn't carry the heavier shedding sometimes seen in purebred Rottweilers, likely a function of whatever coat genetics came from the other side of its lineage. Either way, expect regular brushing to stay ahead of loose hair rather than a coat that needs specialist attention.
Both breeds tie at Low (2/5) for apartment suitability and Low (2/5) for barking -- size and exercise needs, not noise, are what rule out small-space living for either dog. Where the mix pulls ahead is tolerance for being alone: Moderate (3/5) against the Spaniel's Low (2/5), a meaningful edge if your household has long stretches away from home.
Trainability ties at High (4/5) for both dogs. First-time owner suitability doesn't: the French Spaniel rates Moderate (3/5), the Rottweiler Mix Low (2/5), the same gap you'd see with a purebred Rottweiler. Mixed heritage hasn't softened the handling demands that come with an 80-135 lb dog with strong guarding instincts, so an experienced handler is still the better fit regardless of what's mixed into the pedigree.
This is where the mix's watchful streak shows up. Good with kids rates High (4/5) for the Spaniel against Moderate (3/5) for the mix; good with other dogs is High (4/5) versus Low (2/5); friendliness to strangers is High (4/5) versus Low (2/5). Across every social metric here, the Spaniel is the more outgoing, easier-around-others dog.
The mix's expected lifespan, 9-10 years, is a narrower and slightly lower band than the purebred Rottweiler's 8-11 -- still shorter than the Spaniel's 10-12. Its health list is notably shorter, though: five conditions (hip dysplasia, elbow dysplasia, osteosarcoma, subaortic stenosis, cruciate ligament tears) against the ten conditions a purebred Rottweiler typically carries. Mixed breeding may be trimming some of the risk here, even if the lifespan number hasn't moved much.
Cost level rates Moderate (3/5) for the Spaniel against High (4/5) for the mix, with monthly costs of $110-$240 and a first-year range of $1,700-$3,200 -- both notably lower than the roughly $125-$250 monthly and $2,000-$3,500 first-year figures typical of a purebred Rottweiler. A mix can be the more budget-friendly route to a similar-looking dog.
French Spaniel weighs 45–60 lbs and lives 10–12 years; Rottweiler Mix weighs 80–135 lbs and lives 9–10 years. The two diverge most on good with other dogs and friendly to strangers. They are level on apartment suitability, barking and shedding, so those cannot decide it. In the table, a "winner" means easier for an ordinary household — not better. Size, coat and origin are recorded without a verdict. Because both breeds are scored the same way, the gaps are reliable even where the absolute numbers are rough.
Not on this data -- it carries the same 80-135 lb, 22-27 inch range. Size isn't where the mix differs from the purebred.
Mainly health and cost. The mix's health list runs to five conditions against a purebred's typical ten, and its costs -- $110-$240 monthly -- run lower than a purebred's roughly $125-$250.
Rated Low (2/5), the weakest score in this comparison. If you have other dogs at home, the French Spaniel's High (4/5) rating is the safer match.
The Rottweiler Mix, at Moderate (3/5) against the Spaniel's Low (2/5) -- a small but real edge for households with long workdays.
No -- it rates Low (2/5) for first-time owners, the same caution that applies to a purebred Rottweiler. Size and guarding instinct don't disappear with mixed parentage.
9-10 years, a touch shorter than a purebred Rottweiler's 8-11 and well below the French Spaniel's 10-12.
No -- this mix still runs 80-135 lbs, the same range as a purebred Rottweiler.
$110-$240 monthly against roughly $125-$250 for a purebred Rottweiler, and $1,700-$3,200 in year one versus $2,000-$3,500.
Not particularly -- it rates Low (2/5) for good with other dogs, well below the French Spaniel's High (4/5).
9-10 years, slightly shorter than the 10-12 years typical of a French Spaniel.






Health information here is general and is not veterinary advice. If your dog shows pain, sudden behaviour change, or worsening symptoms, consult a licensed veterinarian.
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