Table 1 Questionnaire about dietary intake posted to owners before the referral consultation

Dietary type and changes

What type of diet is fed daily to the dog?

Commercial pet food, Home-made diet, Commercial and home-made diet

Is the commercial diet a veterinary prescription diet or a maintenance diet?

Veterinary prescription diet, Maintenance diet

Please, list all the ingredients in the dog’s diet.

List

Has the diet of your dog been changed before or after clinical signs onset?

Before, After

Oil supplementation

Do you add any oil to your dog’s diet?

No, Yes

Which type of oil do you add to your dog’s diet?

Olive, Extra-virgin olive, Corn, Mix seeds, Sunflower

How many teaspoons of oil do you add per ration?

1, 2, >2

How often do you integrate oil into your dog’s diet?

1 = A few times/year, 2 = A few times/month, 3 = A few times/week, 4 = Daily, 5 = Multiple times/day

Did you start oil supplementation before or after the onset of clinical signs?

Before, After

EFA supplementation

Do you feed any dietary supplement based on EFA to your dog?

No, Yes

Did you start the dietary supplement based on EFA before or after the onset of clinical signs?

Before, After