"This is the first demonstration that dogs can tell apart their owner's voice from many others," Andics Attila, leader of the lab where the study was carried out, said in a press release Tuesday.
The dogs had to choose from a distance and find their owners. The game had multiple rounds and the owner's voice was paired with 14 different strangers' voices.To make sure the dogs were guided by voice alone, and not their sense of smell, in the last two rounds the researchers played the owner's voice from where the stranger hid.
Tamás Faragó, senior researcher at the Department of Ethology, Eötvös Loránd University, told CNN Thursday that it could be viewed as"surprising" that dogs would not rely more on their sense of smell in such an experiment. If the owner's and the stranger's voice differed more in pitch and noisiness it helped dogs to recognize their owner's voice, researchers found, whereas timbre and other sound properties did not help the dogs to differentiate between their owner and a stranger.
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