Pet rats need a balanced diet, not an improvised mixture judged only by variety. The RSPCA recommends commercial pellets made specifically for rats. Foods formulated for another small mammal are not interchangeable.
Build around a complete rat food
PDSA recommends rat nuggets, measured using the product’s feeding instructions, alongside small daily portions of suitable fresh fruit and vegetables. Treats should be occasional. Check each rat’s condition and intake rather than assuming that an empty bowl means every cage-mate ate enough.
Count fresh foods and foraging rewards within the daily allowance. The RSPCA warns that adding extras on top can contribute to excess weight. Scatter some food or hide portions in suitable enrichment so feeding also provides activity.
Keep drinking water available
Provide fresh, clean water continuously. Check bottles for leaks and blockages and clean them regularly; more than one water point reduces competition and gives a backup if one stops working.
What changed in this article
The inherited raw-food percentages were not a verified complete formulation and have been removed. We also removed the unsupported claim that ordinary tap-water disinfectants inevitably build up fatally in rats. A local drinking-water warning or an individual medical problem needs specific advice, rather than a universal bottled-water rule. For an individual diet plan or a persistent change in eating or weight, speak to your vet.
See the main rat care guide for wider care planning.
Sources checked
Replacement copy checked on 2026-11-08. This is a source-based editorial review, not independent veterinary review.