[anonymous]

Per a simple Google search and the search engine here “sodium”
Purina Pro Plan Focus Sensitive Skin & Stomach Salmon & Rice
https://www.k9ofmine.com/best-low-sodium-dog-food excerpt below

Generally speaking, most veterinarians use the following categories when discussing low-sodium diets (it usually easier to use the amount of sodium provided for each 100 calories as your unit of measure when comparing foods):
Dogs with no sodium restrictions require food with at least 0.5% sodium content (>100mg sodium/100kCal)
Dogs who require mild sodium restriction should be offered foods with between 0.35% and 0.5% sodium content (80 to 100mg/100kCal)
Dogs who require moderate sodium restriction should only receive foods with between 0.1% and 0.35% sodium content (50 to 80mg/100kCal)
Dogs who require severe sodium restriction should be offered food with less than 0.1% sodium content (<50mg/100kCal)
While the AAFCO doesn’t address the maximum amount of sodium dogs can ingest safely, the National Research Council of the National Academies does. According to their guidelines, a 33-pound dog who burns about 1,000 Calories per day should not consume more than 2,000 milligrams per day. They do not explicitly state how to extrapolate this figure, as calorie consumption and body weight do not necessarily have a linear relationship.

Copied from Reviews:https://disqus.com/by/zignaturedogfood/ excerpt below
Zignature Dog Food • 3 months ago
Regardless of their name we sincerely apologize for your experience with our customer service team. We never want our fans or possible fans to have a bad experience dealing with us.
Here is the correct sodium levels for all of our Zignature formulas:
Salmon-0.72%
Venison-0.60%
Kangaroo-0.67%
Whitefish-0.51%
Duck-0.70%
Lamb-0.62%
Trout & Salmon-0.57%
Turkey-0.54%
Zssential-0.52%