“An Exploratory Analysis of Head-Tilting in Dogs”, Andrea Sommese, Ádám Miklósi, Ákos Pogány, Andrea Temesi, Shany Dror, Claudia Fugazza2021-10-26 (dog)⁠:

Little is known about head-tilts in dogs. Based on previous investigations on the head turning and the lateralized brain pattern of human speech processing in dogs, we hypothesized that head-tilts may be related to increased attention and could be explained by lateralized mental functions.

We observed 40 dogs during object-label knowledge tests and analysed head-tilts occurring while listening to humans requesting verbally to fetch a familiar toy. Our results indicate that only dogs that had learned the name of the objects tilted their heads frequently.

Besides, the side of the tilt was stable across several months and tests. Thus, we suggest a relationship between head-tilting and processing relevant, meaningful stimuli.