| Main Diet | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Commercial | 228 | 79% | 76 | 79% |
| Homecooked Diet | 34 | 12% | 5 | 5% |
| Raw | 13 | 4% | 15 | 16% |
| Other | 10 | 3% | 0 | 0% |
| Not Answered | 4 | 1% | 0 | 0% |
| If Homecooked, Percentage of Homecooked | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 219 | 76% | 82 | 85% |
| None (0 Percent) | 2 | 1% | 1 | 1% |
| 10 Percent | 6 | 2% | 1 | 1% |
| 20 Percent | 7 | 2% | 4 | 4% |
| 30 Percent | 9 | 3% | 1 | 1% |
| 40 Percent | 3 | 1% | 1 | 1% |
| 50 Percent | 18 | 6% | 1 | 1% |
| 60 Percent | 5 | 2% | 0 | 0% |
| 70 Percent | 4 | 1% | 0 | 0% |
| 80 Percent | 1 | 0% | 2 | 2% |
| 90 Percent | 6 | 2% | 0 | 0% |
| 100 Percent | 9 | 3% | 3 | 3% |
| If Homecooked, Percentage of Commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 209 | 72% | 79 | 82% |
| None (0 Percent) | 3 | 1% | 3 | 3% |
| 10 Percent | 6 | 2% | 0 | 0% |
| 20 Percent | 1 | 0% | 2 | 2% |
| 30 Percent | 6 | 2% | 0 | 0% |
| 40 Percent | 5 | 2% | 0 | 0% |
| 50 Percent | 17 | 6% | 1 | 1% |
| 60 Percent | 3 | 1% | 2 | 2% |
| 70 Percent | 9 | 3% | 1 | 1% |
| 80 Percent | 8 | 3% | 3 | 3% |
| 90 Percent | 8 | 3% | 1 | 1% |
| 100 Percent | 14 | 5% | 4 | 4% |
| Type of Commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Grocery store (Purina, Old Roy, Kalkan, Pedigree, etc) | 55 | 19% | 10 | 10% |
| Pet store (Hills, Eukanuba, Nature's recipe, etc) | 128 | 44% | 35 | 36% |
| Veterinary hospital (Hills prescription diet, other prescrip foods) | 28 | 10% | 6 | 6% |
| Not Answered | 24 | 8% | 18 | 19% |
| Health Food store (Solid gold, Orijen, Canidae, etc) | 54 | 19% | 27 | 28% |
| If Commercial, Percent Dry Commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 36 | 12% | 17 | 18% |
| None (0 Percent) | 4 | 1% | 3 | 3% |
| 10 Percent | 1 | 0% | 0 | 0% |
| 20 Percent | 0 | 0% | 0 | 0% |
| 30 Percent | 6 | 2% | 1 | 1% |
| 40 Percent | 3 | 1% | 1 | 1% |
| 50 Percent | 27 | 9% | 1 | 1% |
| 60 Percent | 7 | 2% | 2 | 2% |
| 70 Percent | 11 | 4% | 0 | 0% |
| 80 Percent | 28 | 10% | 7 | 7% |
| 90 Percent | 30 | 10% | 11 | 11% |
| 100 Percent | 136 | 47% | 53 | 55% |
| If Commercial, Percent Moist commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 233 | 81% | 79 | 82% |
| None (0 Percent) | 30 | 10% | 14 | 15% |
| 10 Percent | 11 | 4% | 1 | 1% |
| 20 Percent | 5 | 2% | 1 | 1% |
| 30 Percent | 2 | 1% | 0 | 0% |
| 40 Percent | 2 | 1% | 1 | 1% |
| 50 Percent | 6 | 2% | 0 | 0% |
| 60 Percent | 0 | 0% | 0 | 0% |
| 70 Percent | 0 | 0% | 0 | 0% |
| 80 Percent | 0 | 0% | 0 | 0% |
| 90 Percent | 0 | 0% | 0 | 0% |
| 100 Percent | 0 | 0% | 0 | 0% |
| If Commercial, Percent Canned Commercial | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Not Selected | 183 | 63% | 67 | 70% |
| None (0 Percent) | 18 | 6% | 12 | 12% |
| 10 Percent | 28 | 10% | 9 | 9% |
| 20 Percent | 22 | 8% | 4 | 4% |
| 30 Percent | 10 | 3% | 1 | 1% |
| 40 Percent | 4 | 1% | 1 | 1% |
| 50 Percent | 15 | 5% | 0 | 0% |
| 60 Percent | 1 | 0% | 1 | 1% |
| 70 Percent | 3 | 1% | 0 | 0% |
| 80 Percent | 1 | 0% | 0 | 0% |
| 90 Percent | 1 | 0% | 0 | 0% |
| 100 Percent | 3 | 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 | 186 | 64% | 51 | 53% |
| No | 93 | 32% | 44 | 46% |
| Not Answered | 10 | 3% | 1 | 1% |
| Supplements | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Vitamins | 125 | 43% | 41 | 43% |
| Fatty acid (Eicosapentaenoic acid, Docosahexaenoic acid, etc) | 63 | 22% | 26 | 27% |
| Chondroprotective agents (Chondroitin sulfate, Glucosamine, etc) | 151 | 52% | 43 | 45% |
| Herbal substances | 70 | 24% | 16 | 17% |
| Other | 48 | 17% | 9 | 9% |
| Not Answered | 82 | 28% | 26 | 27% |
| Treats Given | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Plain Rawhides | 69 | 24% | 26 | 27% |
| Basted Rawhides | 38 | 13% | 12 | 12% |
| Peanut Butter | 69 | 24% | 23 | 24% |
| Greenies | 24 | 8% | 4 | 4% |
| Bully Sticks | 25 | 9% | 16 | 17% |
| Hooves | 16 | 6% | 5 | 5% |
| Pigs Ears | 58 | 20% | 12 | 12% |
| Raw Bones | 50 | 17% | 38 | 40% |
| Cooked Bones | 22 | 8% | 6 | 6% |
| Commercially Prepared Bones | 49 | 17% | 13 | 14% |
| Other | 69 | 24% | 22 | 23% |
| Not Answered | 55 | 19% | 12 | 12% |
| Bottled Water Given | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Never or very seldom | 143 | 49% | 46 | 48% |
| On occasion, less than half | 15 | 5% | 6 | 6% |
| Approx half bottled water | 4 | 1% | 5 | 5% |
| Frequently, more than half | 6 | 2% | 1 | 1% |
| Always or almost always | 8 | 3% | 3 | 3% |
| Not Answered | 113 | 39% | 35 | 36% |
| Regular Exercise | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Yes | 140 | 48% | 89 | 93% |
| Yes until he became generally immobile | 131 | 45% | 5 | 5% |
| No | 13 | 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) | 192 | 66% | 56 | 58% |
| Loose in backyard with playmates | 47 | 16% | 23 | 24% |
| Loose in backyard (left outside on its own) | 9 | 3% | 1 | 1% |
| Other | 26 | 9% | 13 | 14% |
| Not Answered | 14 | 5% | 3 | 3% |
| Frequency of Exercise | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Don't Exercise | 9 | 3% | 3 | 3% |
| Less than once a week | 5 | 2% | 0 | 0% |
| Once a week | 5 | 2% | 0 | 0% |
| Twice a week | 24 | 8% | 8 | 8% |
| Every Other Day | 49 | 17% | 15 | 16% |
| Every Day | 131 | 45% | 49 | 51% |
| Twice a day | 62 | 21% | 20 | 21% |
| Not Answered | 4 | 1% | 1 | 1% |
| Duration of Exercise | Group 1 | % Group 1 | Group 2 | % Group 2 |
| Don't Exercise | 7 | 2% | 2 | 2% |
| 15 Minutes | 58 | 20% | 13 | 14% |
| 30 Minutes | 105 | 36% | 37 | 39% |
| 45 Minutes | 50 | 17% | 13 | 14% |
| 1 Hour | 37 | 13% | 16 | 17% |
| 1 Hour, 15 Minutes | 5 | 2% | 2 | 2% |
| 1 Hour, 30 Minutes | 6 | 2% | 0 | 0% |
| 1 Hour, 45 Minutes | 1 | 0% | 0 | 0% |
| 2 Hours | 4 | 1% | 4 | 4% |
| 3 Hours or more | 5 | 2% | 6 | 6% |
| Not Answered | 11 | 4% | 3 | 3% |
