Dry vs Wet Cat Food: What Vets Actually Recommend

The question of dry versus wet cat food comes up at almost every feline wellness consultation, and the answer most vets give surprises many cat owners: for most cats, wet food is the better long-term option. Here is why, and what the nuances are.

The Water Problem in Cats

Cats are descended from desert-dwelling ancestors who obtained most of their moisture from prey they consumed. This evolutionary history means cats have a lower thirst drive than dogs — they do not instinctively drink sufficient water to compensate for a dry food diet. A cat eating predominantly dry kibble may be in a state of mild chronic dehydration without the owner ever recognising it. This matters because the two most common serious chronic diseases in older cats — kidney disease and feline lower urinary tract disease — are both significantly influenced by hydration status. Cats who are consistently well-hydrated produce more dilute urine, which reduces the concentration of minerals that form crystals and reduces strain on the kidneys. The evidence for wet food reducing the risk of urinary tract disease is reasonably strong in the veterinary literature.

The Caloric Density Issue

Dry cat food is significantly more calorie-dense than wet food. Cats eating ad libitum (free-choice) dry food can easily become overweight because the caloric density is so high and because cats are grazing animals by nature. Overweight cats are at elevated risk for diabetes, hepatic lipidosis and orthopaedic problems. The obesity epidemic in cats is a genuine concern in the veterinary world globally.

Arguments for Dry Food

Dry food is more economical, more convenient, less odorous and some cats simply refuse wet food entirely. The mechanical action of crunching kibble provides some dental benefit, though significantly less than many manufacturers imply. For healthy, active cats with no urinary history, dry food fed in measured portions — not free-choice — is not harmful.

The Ideal Approach

Most vets recommend a combination approach: wet food as the majority of the diet with a smaller measured portion of dry food, or dry food used as part of an enrichment feeding strategy in puzzle feeders. Water intake should be maximised through wet food, multiple water bowls placed away from food and litter trays, and water fountains which cats often prefer to still water. Regardless of wet or dry, choose brands that are AAFCO or equivalent complete and balanced for your cat's life stage, with a named animal protein as the first ingredient.