Selecting the appropriate gavage needle for safe oral dosing in rats and mice can be challenging. While there are no definitive guidelines for determining the exact size for each animal, this list has been compiled using information from published papers, references, employee expertise, and anecdotal reports.

It is essential to ensure that the tube extends from the tip of the nose to the last rib to confirm its placement in the stomach rather than the esophagus. However, the ideal feeding needle is ultimately the one that works best for your specific needs. We recommend experimenting with multiple sizes to find the best fit.