An artificial insemination device is formed by a semen-filled tube or tube at one end of a pipette with a syringe attached to the other end. A fitted insemination point is fitted to the free end of the semen-filled straw. The semen-filled tube is attached with the adjustable openings in the pipette and the fitted point, in such a way that the semen-filled tube of different diameters can be forced to adjust to the adjustable opening. The pipette-tube-point unit is inserted in the vagina of the animal using a speculum until the tip with one or more folds, one or more openings and a spherical sealing mechanism, enters the cervix and forms a seal between the tip and cervix. The syringe, which contains the diluent, is pressed to force the semen and the diluent fluid toward at least one ejection outlet in the tip and out toward the uterus of the animal. Optimum quantities of semen and diluent fluid may be provided for different animals.