What instrument is used to inspect an animal's ear canal?

The instrument used to inspect an animal's ear canal is the otoscope. This specialized tool allows veterinary professionals to visualize the inside of the ear, which helps in diagnosing various conditions such as infections, foreign bodies, or earwax buildup. The otoscope typically consists of a light source and a magnifying lens, which provide clear visibility of the ear structures.

In contrast, a sphygmomanometer is designed to measure blood pressure, while a stethoscope is used for listening to heartbeats and lung sounds. An endoscope, while also a visualizing tool, is generally used for internal examinations of the gastrointestinal tract and other bodily cavities rather than specifically for the ear canal.