Sound Localization Ability in Dogs.

Area of Science:

• Animal Behavior
• Auditory Neuroscience
• Sensory Perception

Background:

• Spatial auditory acuity, measured by the minimum audible angle (MAA), is crucial for animals.
• Previous studies on canine MAA were limited by methodology and sample size.
• Assessing MAA in dogs is important for understanding their sensory capabilities.

Purpose of the Study:

• To assess the minimum audible angle (MAA) in dogs using an adaptive method.
• To evaluate the feasibility and reliability of the staircase method for canine auditory spatial localization.
• To investigate potential improvements in MAA over time in dogs.

Main Methods:

• Employed a staircase method with a two-forced choice procedure in 10 dogs.
• Tested sound source separation angles ranging from 60° to 1°.
• Continuously adapted difficulty levels to observe individual dog performance and improvement.

Main Results:

• The average MAA in dogs was 7.6°, with significant interindividual variability (1.3°–13.2°).
• Dogs showed global improvement throughout the assessment, indicated by decreasing MAA and choice latency.
• The staircase method proved feasible and reliable for assessing canine auditory spatial localization.

Conclusions:

• The staircase method allows for accurate and adaptive assessment of auditory spatial acuity in dogs.
• Canine MAA exhibits greater variability than previously reported, with some individuals achieving high acuity.
• Further large-scale studies are needed to explore factors influencing MAA in dogs.