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Golden Retriever allergies: Z/D diet failed. What's the next step?

Updated on September 23rd, 2025

Pet's info: Dog | Golden Retriever | Female | spayed | 2 years old | 70 lbs

What kind of a diet would you put a golden retreiver on after being on Z/D diet for 10-12 weeks seeing no difference. Still rolling on carpet and some scratching? and biting at her feet, also some hints on what to do about needing anal gland expressions? Any food additive ?

1 Answer

Most Helpful Answer

Ricardo Fernandez, DVM

Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on August 28th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! If she has not improved after doing an appropriate food allergy trial, then other possibilities in terms of allergies should be considered which include environmental allergies and flea allergies. This is possibly due to allergies. It really comes down to figuring out what is causing her allergies so that they can be treated or the specific allergen avoided. A secondary infection is likely and also needs to be addressed.

There are many things that can cause allergies though in most cases they can be broken down into 3 big categories: flea, food and environmental allergies.

Allergies are usually worked up in a stepwise fashion starting with flea allergies as this is the easiest and cheapest to take care of. If not on a flea preventative, then it would be a good idea to get started on one. If already on one then it would be a good idea to change to something else (there are many new products out in the market).

If not improved in 1-3 months then it is time to move on and check for environmental allergies, as you have already checked for food allergies, which require blood and/or skin tests.

Allergies can be very frustrating to deal with at first but so rewarding at the end when we are able to treat them effectively!
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