prick ears

Prick ears, known by several names such as erect ears or perked ears, are a type of ear.
As the name(s) implies, the ear is "pricked" or "erect", tapering at a pointed end. They are always upwards pointing and upright. These ears are traditionally seen on wolfish looking dog breeds as well as various canids.

Not to be confused with

cropped_ears, in which the whole or part of their external ears (pinnae/auricles) are surgically removed for cosmetic purposes. Cropped ears can be most commonly seen in certain breeds like Boxers, Pit Bulls, Pinschers and Schnauzers.
ear_tuft
humanoid_pointy_ears, which can be seen as the humanoid equivalent of prick ears.