Rayne is the balance between what pet owners want (whole food ingredients, less processing, more natural approach) and what veterinary teams need to feel confident in their recommendation (science, research, expertise, analyses, clinic support).

If you are switching diets or adding a new member to your pack, talk to your veterinary team about how you can give them a jump start on nutrition and get everyone started off on the right paw. Then use this transition guide to help your pet properly adjust to their new Rayne diet.

Begin your pet’s diet transition with as little as 1/4 of their new Rayne diet to 3/4 of their current food.

If they accept this well and there is no digestive upset, increase this amount to 1/2 Rayne and 1/2 their current food.

Continue with these incremental changes until their current food is entirely replaced with their new Rayne diet. If your pet’s tummy is gurgling or if there are other signs of gastrointestinal distress, slow down with the transition to give them more time to adjust.

If you have any concerns, contact your veterinary team for assistance.

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Slow and steady.

The typical transition to a new diet can take 5-10 days, but depending on your pet, their preferences, and their medical profile, that can vary. Err of the side of taking it slow to minimize any digestive upset.

Also be sure to provide plenty of privacy. Although we want to watch and evaluate what our pets think of a new diet, our attention can be off-putting.


Cats are particularly discerning, so don't be frustrated if they take a little longer. Taste, texture, and temperature all play into what your cat chooses to eat. Cats have unique nutritional needs and should never go more than 24 hours without eating. If your cat is not eating, please connect with your veterinary team.

If your pet has complex medical concerns, your pet may need to do a longer transition. Speak with your veterinary team about what is best for your individual pet.