Dynamic changes in ear temperature in relation to separation distress in dogs.

Area of Science:

• Veterinary Medicine
• Animal Behavior
• Biotechnology

Background:

• Stress in domestic animals can manifest as physiological changes affecting body surface temperature.
• Infrared thermography offers a non-invasive method to visualize these temperature variations.
• Remote monitoring reduces human interference and potential stress induction in animal subjects.

Purpose of the Study:

• To evaluate the efficacy of long-distance infrared thermography for remote stress assessment in dogs.
• To correlate ear pinnae temperature changes with specific social and isolation conditions in pet dogs.

Main Methods:

• Six pet dogs were subjected to a separation test including owner presence, stranger presence, and social isolation.
• A thermographic camera recorded ear pinnae temperatures from approximately 7 meters away.
• Temperature data from both ears were analyzed for patterns related to different test conditions.

Main Results:

• Ear pinnae temperatures decreased during social isolation, indicating a stress response.
• Temperatures increased when either the owner or a stranger was present, suggesting reduced stress.
• No significant lateralized temperature differences were observed between the two ears.

Conclusions:

• Long-distance infrared thermography is a promising non-invasive technique for remote stress detection in dogs.
• Ear temperature variations reliably reflect stress levels in response to social stimuli and isolation.
• Canine ear hair structure can limit the applicability of this method in some individuals.