Dry Cat Food Linked to Kidney Failure in Forum Post

Forum user claims dry cat food has only 3% water: cats should drink 400ml

Wild cats eat prey with 70% water content. Their domestic relatives, fed on dry kibble, consume a mix that barely reaches 3%. According to a thread participant, the math is simple: to compensate for this difference, the animal would need to drink about 400 milliliters of water a day, which they rarely do. This claim, posted in early February 2016, has evolved into an unintentional guide on pet health and care, spanning from feline renal failure to canine leishmaniasis treatment.

Dry Food and Kidneys: The Calculation Most Ignore

The most cited issue in the thread is renal insufficiency. The repeated recommendation is to perform control blood work starting at age ten, before visible symptoms—mainly vomiting—appear. Once the animal shows signs, there is little room for maneuvering.

Prevention relies on hydration. Some owners have replaced the water bowl with a glass of low-residue mineral water, changing it daily, resulting in a clear increase in consumption. Electric water fountains are also mentioned, though results vary: some cats drink more, while others prefer pot water, soil included. The prevailing theory in described cases is that the most effective approach isn't just making the cat drink more, but ensuring the food provides the water: shifting to an 80-90% wet food diet.

This is the crux of the matter. The transition doesn't always work. Some felines stubbornly reject wet food for years, accepting only kibble. There are first-person accounts of cats who, after years eating the same brand of pouches, suddenly stop touching them without apparent cause, while maintaining dry food intake and increasing water consumption. The common advice: remove the product for a while, try other brands, and don't force it.

Royal Canin, Acana, Applaws: What You Pay for in a Bag of Kibble

The second line of discussion concerns composition. Criticism focuses on cereals, animal by-products, and sugars. Defenders of brands with extensive catalogs highlight their ability to segment products: food for kittens, neutered cats, seniors, outdoor cats, or those with digestive issues. The counterargument is that this segmentation comes at the cost of carbohydrates.

Figures cited include kibbles with 42% dehydrated meat, and high-end brands with protein around 37-38% compared to 35% in others considered superior. A breakdown of several labels compared in the thread reveals compositions containing animal by-products and sugars.

A recurring detail: veterinarians who sell food in their clinics. Distrust toward this channel is explicit. Additionally, consultation fees, sometimes quoted around 75 euros, serve as an argument for seeking information independently.

Leishmania and Glucantime: Abandoned Treatment

The hardest case involves an older dog diagnosed with leishmaniasis after visiting the vet for excessive drinking and urination. With antimonial treatment, the animal became bedridden, stopped eating, and suffered eye deterioration. The final decision was to interrupt the treatment. The lingering doubt—whether the standard protocol is too aggressive for elderly animals—is never resolved.

Struvite Crystals and Natural Diet: A Resolved Case

In contrast to dead ends, there is a success story. A dog with recurrent struvite crystals—the amount detected in one analysis even surprised the veterinarian—stopped relapsing after switching to a homemade diet: rice with chicken, beans, and carrots twice a week, along with a notable increase in urination. The crystals have not returned.

The Gap in Exotic Animal Veterinary Care

Owners of budgies, parrots, ferrets, iguanas, or reptiles face significant challenges. The complaint is that many professionals only treat dogs, cats, and large animals, while specialists in exotic pets are scarce. The result is trial-and-error learning by owners.

Added to this is a warning against home remedies. Some claim orange oil prevents cats from scratching furniture, but another participant warns that essential oils containing phenol can poison the animal, as they inhale it and cannot eliminate it effectively. A cheap remedy can turn out expensive.

On a practical level, costs arise: scratching posts start at 13 euros for a one-meter model, rotating food puzzles cost around 40 euros to make the animal work for its ration and avoid weight gain, and cardboard boxes with holes or homemade toys often prove more interesting than purchased ones.

The analysis stalls where it always does: no one disputes the importance of water and protein, but there is no consensus on how much processed kibble is ideal for an animal per day.