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Oxytocin and Emotional Tear in Dogs

Murata, K.; Nagasawa, M.; Onaka, T.; Kanemaki, N.; Nakamura, S.; Tsubota, K.; Mogi, K.; Kikusui, T.

2022-03-12 animal behavior and cognition
10.1101/2022.03.09.483532 bioRxiv
Show abstract

In humans, tear volume increases in emotional arousal. No studies have investigated the relationship of emotional arousal and tear volume in animals. We measured tear volume in dogs before and after reunion with their owners. Tear volume increased significantly during owner, but not familiar non-owner, reunions but not during reunions with familiar non-owners. When oxytocin instillation was applied to dogs, the tear volume increased, suggesting that oxytocin can mediate the emotion-induced tear secretion in dogs. When the photos of dogs face in which artificial tear was applied to the dogs eyes, the positive impression of these photo increased. These suggest that emotional tear can facilitate human-dog emotional connection.

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"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.