| Main Diet | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Commercial | 350 | 81% | 77 | 77% |
| Homecooked Diet | 48 | 11% | 7 | 7% |
| Raw | 18 | 4% | 15 | 15% |
| Other | 11 | 3% | 1 | 1% |
| Not Answered | 4 | 1% | 0 | 0% |
| If Homecooked, Percentage of Homecooked | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 332 | 77% | 84 | 84% |
| None (0 Percent) | 5 | 1% | 1 | 1% |
| 10 Percent | 13 | 3% | 1 | 1% |
| 20 Percent | 10 | 2% | 6 | 6% |
| 30 Percent | 10 | 2% | 1 | 1% |
| 40 Percent | 5 | 1% | 1 | 1% |
| 50 Percent | 22 | 5% | 1 | 1% |
| 60 Percent | 8 | 2% | 0 | 0% |
| 70 Percent | 4 | 1% | 0 | 0% |
| 80 Percent | 2 | 0% | 2 | 2% |
| 90 Percent | 7 | 2% | 0 | 0% |
| 100 Percent | 13 | 3% | 3 | 3% |
| If Homecooked, Percentage of Commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 322 | 75% | 80 | 80% |
| None (0 Percent) | 5 | 1% | 3 | 3% |
| 10 Percent | 7 | 2% | 0 | 0% |
| 20 Percent | 2 | 0% | 2 | 2% |
| 30 Percent | 6 | 1% | 0 | 0% |
| 40 Percent | 8 | 2% | 0 | 0% |
| 50 Percent | 21 | 5% | 1 | 1% |
| 60 Percent | 5 | 1% | 2 | 2% |
| 70 Percent | 10 | 2% | 1 | 1% |
| 80 Percent | 11 | 3% | 5 | 5% |
| 90 Percent | 14 | 3% | 1 | 1% |
| 100 Percent | 20 | 5% | 5 | 5% |
| Type of Commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Grocery store (Purina, Old Roy, Kalkan, Pedigree, etc) | 81 | 19% | 10 | 10% |
| Pet store (Hills, Eukanuba, Nature's recipe, etc) | 197 | 46% | 38 | 38% |
| Veterinary hospital (Hills prescription diet, other prescrip foods) | 44 | 10% | 7 | 7% |
| Not Answered | 33 | 8% | 18 | 18% |
| Health Food store (Solid gold, Orijen, Canidae, etc) | 76 | 18% | 27 | 27% |
| If Commercial, Percent Dry Commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 57 | 13% | 17 | 17% |
| None (0 Percent) | 4 | 1% | 3 | 3% |
| 10 Percent | 1 | 0% | 0 | 0% |
| 20 Percent | 3 | 1% | 0 | 0% |
| 30 Percent | 6 | 1% | 1 | 1% |
| 40 Percent | 6 | 1% | 2 | 2% |
| 50 Percent | 37 | 9% | 2 | 2% |
| 60 Percent | 11 | 3% | 2 | 2% |
| 70 Percent | 14 | 3% | 0 | 0% |
| 80 Percent | 44 | 10% | 7 | 7% |
| 90 Percent | 50 | 12% | 11 | 11% |
| 100 Percent | 198 | 46% | 55 | 55% |
| If Commercial, Percent Moist commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 336 | 78% | 82 | 82% |
| None (0 Percent) | 49 | 11% | 14 | 14% |
| 10 Percent | 19 | 4% | 1 | 1% |
| 20 Percent | 12 | 3% | 2 | 2% |
| 30 Percent | 3 | 1% | 0 | 0% |
| 40 Percent | 2 | 0% | 1 | 1% |
| 50 Percent | 8 | 2% | 0 | 0% |
| 60 Percent | 0 | 0% | 0 | 0% |
| 70 Percent | 0 | 0% | 0 | 0% |
| 80 Percent | 1 | 0% | 0 | 0% |
| 90 Percent | 0 | 0% | 0 | 0% |
| 100 Percent | 1 | 0% | 0 | 0% |
| If Commercial, Percent Canned Commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 268 | 62% | 69 | 69% |
| None (0 Percent) | 32 | 7% | 12 | 12% |
| 10 Percent | 44 | 10% | 9 | 9% |
| 20 Percent | 28 | 6% | 5 | 5% |
| 30 Percent | 15 | 3% | 2 | 2% |
| 40 Percent | 7 | 2% | 1 | 1% |
| 50 Percent | 21 | 5% | 0 | 0% |
| 60 Percent | 4 | 1% | 1 | 1% |
| 70 Percent | 3 | 1% | 0 | 0% |
| 80 Percent | 2 | 0% | 0 | 0% |
| 90 Percent | 2 | 0% | 0 | 0% |
| 100 Percent | 5 | 1% | 1 | 1% |
| Has this dog ever been fed food containing artificial preservatives, colors or flavors | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Yes | 273 | 63% | 54 | 54% |
| No | 145 | 34% | 44 | 44% |
| Not Answered | 13 | 3% | 2 | 2% |
| Supplements | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Vitamins | 175 | 41% | 43 | 43% |
| Fatty acid (Eicosapentaenoic acid, Docosahexaenoic acid, etc) | 82 | 19% | 27 | 27% |
| Chondroprotective agents (Chondroitin sulfate, Glucosamine, etc) | 214 | 50% | 45 | 45% |
| Herbal substances | 84 | 19% | 17 | 17% |
| Other | 69 | 16% | 9 | 9% |
| Not Answered | 131 | 30% | 28 | 28% |
| Treats Given | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Plain Rawhides | 98 | 23% | 27 | 27% |
| Basted Rawhides | 52 | 12% | 12 | 12% |
| Peanut Butter | 95 | 22% | 25 | 25% |
| Greenies | 43 | 10% | 4 | 4% |
| Bully Sticks | 39 | 9% | 18 | 18% |
| Hooves | 22 | 5% | 5 | 5% |
| Pigs Ears | 76 | 18% | 12 | 12% |
| Raw Bones | 69 | 16% | 39 | 39% |
| Cooked Bones | 39 | 9% | 7 | 7% |
| Commercially Prepared Bones | 67 | 16% | 14 | 14% |
| Other | 110 | 26% | 25 | 25% |
| Not Answered | 90 | 21% | 12 | 12% |
| Bottled Water Given | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Never or very seldom | 251 | 58% | 49 | 49% |
| On occasion, less than half | 38 | 9% | 6 | 6% |
| Approx half bottled water | 5 | 1% | 5 | 5% |
| Frequently, more than half | 11 | 3% | 1 | 1% |
| Always or almost always | 13 | 3% | 4 | 4% |
| Not Answered | 113 | 26% | 35 | 35% |
| Regular Exercise | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Yes | 217 | 50% | 92 | 92% |
| Yes until he became generally immobile | 188 | 44% | 6 | 6% |
| No | 19 | 4% | 2 | 2% |
| Type of Exercise | Group 1 | % Group 1 | Group 2 | % Group 2 |
| None | 1 | 0% | 0 | 0% |
| Supervised exercise (walking, running, swimming, playtime) | 282 | 65% | 57 | 57% |
| Loose in backyard with playmates | 82 | 19% | 24 | 24% |
| Loose in backyard (left outside on its own) | 14 | 3% | 2 | 2% |
| Other | 33 | 8% | 14 | 14% |
| Not Answered | 19 | 4% | 3 | 3% |
| Frequency of Exercise | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Don't Exercise | 11 | 3% | 3 | 3% |
| Less than once a week | 9 | 2% | 0 | 0% |
| Once a week | 8 | 2% | 0 | 0% |
| Twice a week | 37 | 9% | 8 | 8% |
| Every Other Day | 67 | 16% | 15 | 15% |
| Every Day | 194 | 45% | 51 | 51% |
| Twice a day | 98 | 23% | 22 | 22% |
| Not Answered | 7 | 2% | 1 | 1% |
| Duration of Exercise | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Don't Exercise | 10 | 2% | 2 | 2% |
| 15 Minutes | 98 | 23% | 16 | 16% |
| 30 Minutes | 144 | 33% | 37 | 37% |
| 45 Minutes | 71 | 16% | 13 | 13% |
| 1 Hour | 61 | 14% | 17 | 17% |
| 1 Hour, 15 Minutes | 7 | 2% | 2 | 2% |
| 1 Hour, 30 Minutes | 7 | 2% | 0 | 0% |
| 1 Hour, 45 Minutes | 2 | 0% | 0 | 0% |
| 2 Hours | 8 | 2% | 4 | 4% |
| 3 Hours or more | 9 | 2% | 6 | 6% |
| Not Answered | 14 | 3% | 3 | 3% |
