Does 'natural' on a dog food label mean it's low in sodium?

No, 'natural' refers to how ingredients are sourced or processed rather than to sodium content specifically, and a natural recipe can still contain a meaningful amount of salt. Check the analytical constituents panel for the actual figure rather than relying on front-of-pack wording.

Why would my vet recommend a low-sodium diet for my dog?

This is usually linked to a specific diagnosed condition, such as certain heart or kidney problems, where managing sodium intake is part of the overall treatment plan. It is a decision made alongside your vet based on your dog's individual diagnosis, not something to start on your own.

Is dry or wet food generally lower in sodium?

There is no consistent rule either way - sodium content depends on the specific recipe rather than whether the food is wet or dry, so the only reliable way to compare is checking the analytical constituents on the products you are actually considering.

Are treats a source of sodium too?

Yes - treats and chews can contribute meaningful sodium alongside a dog's main meals, so if your vet has recommended a lower-sodium diet, it is worth checking treat labels as well as the main food rather than focusing on mealtimes alone.

Low sodium wet dog food

Comparing sodium content between wet dog foods means checking the analytical constituents on the back of the pack, since front-of-pack claims are not consistently regulated in the way the actual ingredients list is. A lower-sodium recipe is generally something to discuss with your vet if your dog has a diagnosed heart, kidney or blood pressure condition, rather than an assumption every dog needs.

Reading sodium on a dog food label

UK pet food labelling generally lists sodium, or sometimes salt, within the analytical constituents panel on the back of the pack, expressed as a percentage. Comparing this figure between products, ideally on a like-for-like basis such as per 100g, gives a genuine comparison rather than relying on words like 'light' or 'natural' printed on the front, which are not a reliable proxy for sodium content specifically.

Wet food recipes vary a fair amount in sodium content depending on the recipe and how it is made, so two products from the same range can differ meaningfully, which is exactly why checking the actual panel matters more than assuming a whole brand is uniformly low or high.

Who actually needs a lower-sodium diet

Dogs with certain heart conditions, kidney disease or some blood pressure issues are sometimes advised toward a lower-sodium diet as part of their overall management, and in these cases your vet may recommend a specific therapeutic food rather than simply a general product with a lower number on the label. This is a genuine medical decision rather than something to guess at from a food label alone.

For a healthy dog with no diagnosed condition, sodium content is one factor among many rather than something that needs to be minimised on its own, and there is no evidence that a healthy dog benefits from an unusually low-sodium diet in the way a dog with an existing condition might.

Making a sensible comparison

If you are comparing wet foods for a dog on veterinary advice to reduce sodium, take the actual percentage from each pack and compare them side by side rather than relying on marketing language, and take your comparison to your vet if you are unsure which figures actually count as meaningfully lower.

For everyday feeding without a specific medical reason, choosing a wet food based on your dog's overall preferences, life stage and any other dietary need is more useful than fixating on sodium content alone.

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Common questions

Does 'natural' on a dog food label mean it's low in sodium?: No, 'natural' refers to how ingredients are sourced or processed rather than to sodium content specifically, and a natural recipe can still contain a meaningful amount of salt. Check the analytical constituents panel for the actual figure rather than relying on front-of-pack wording.
Why would my vet recommend a low-sodium diet for my dog?: This is usually linked to a specific diagnosed condition, such as certain heart or kidney problems, where managing sodium intake is part of the overall treatment plan. It is a decision made alongside your vet based on your dog's individual diagnosis, not something to start on your own.
Is dry or wet food generally lower in sodium?: There is no consistent rule either way - sodium content depends on the specific recipe rather than whether the food is wet or dry, so the only reliable way to compare is checking the analytical constituents on the products you are actually considering.
Are treats a source of sodium too?: Yes - treats and chews can contribute meaningful sodium alongside a dog's main meals, so if your vet has recommended a lower-sodium diet, it is worth checking treat labels as well as the main food rather than focusing on mealtimes alone.

Sources

Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.

PDSA — Pet Health Hub

Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.