Vaquita have 32-44 teeth on the upper jaw and 34-40 on the lower. This means a Vaquita can have 66-84 teeth in total, with the average at around 74 teeth.
One of the surest ways to tell the difference between a stranded dolphin and a porpoise is their teeth. Porpoises’ teeth are spade-shaped, while the dolphins’ are conical. In the field, the best way to identify a porpoise is that they are generally smaller and more shy than any other cetacean, with the Vaquita being the most extreme example.