Table 1.
Characteristics of 10,474 dogs in CSLB analysis (76 pure breeds included)
| Explanatory variable | n (%) or mean (SD) |
|---|---|
| Age | |
| 6–9.9 years | 4956 (47%) |
| 10–18 (not including 18) years | 5518 (53%) |
| Sex | |
| Male, castrated | 5042 (48%) |
| Female, spayed | 5432 (52%) |
| Body size and weight | |
| Small (< 10 kg) | 2673 (26%) |
| Middle (10–29.9 kg) | 5064 (48%) |
| Large (30–44.9 kg) | 2389 (23%) |
| Giant (≥ 45 kg) | 348 (3%) |
| Breed | |
| Mixed-breed dog | 5885 (56%) |
| Labrador Retriever | 616 (6%) |
| Golden Retriever | 463 (4%) |
| German Shepherd | 192 (2%) |
| Dachshund | 159 (2%) |
| Australian Shepherd | 149 (1%) |
| Poodle (standard) (≥ 13.6 kg) | 130 (1%) |
| Border Collie | 124 (1%) |
| Chihuahua | 107 (1%) |
| Beagle | 105 (1%) |
| Shih Tzu | 93 (1%) |
| Other purebred dogsa | 2451 (23%) |
| Feeding frequency | |
| Fed once per day | 860 (8%) |
| Fed twice per day | 7779 (74%) |
| Fed three or more times per day | 789 (8%) |
| Free fed | 1046 (10%) |
| Fatty acid supplement | |
| Given daily or more often | 2252 (22%) |
| Cognitive activity | |
| Primary or secondary activity requires training | 1759 (17%) |
| CSLB | |
| Score | 36.4 (5.3) |
| Primary diet componentb | |
| Commercial, dry | 8506 (81%) |
| Commercial, canned | 583 (6%) |
| Commercial, freeze-dried | 421 (4%) |
| Commercial, refrigerated/frozen | 357 (3%) |
| Home-prepared, cooked | 151 (1%) |
| Commercial, semi-dry/semi-moist | 128 (1%) |
| Home-prepared, raw | 110 (1%) |
| Other | 218 (2%) |
aSee Supplementary Information 4 for full list and numbers of purebred dogs included in the CSLB analysis
bThis data is included in the table for descriptive purposes only and was not incorporated into our analyses