Abstract
The Mongolian gerbil is commonly used in medical research. Intravenous administration of compounds in gerbils is difficult as tail vein injection sites are not visible. The present study describes a method for intravenous administration into the jugular vein in Mongolian gerbil by using an 'over-the-needle' catheter under anaesthesia. The catheter penetrates the pectoral muscle and is easily inserted into the vein. The method is simple and avoids extensive surgery in the animals.