The dog is the most loyal and affectionate animal.
It is the primitive tamed animal and has accustomed to a life among us. During the years of domestication, dogs have developed distinctive capabilities to interact and collaborate with us. This potential distinguish them from their wild ancestors, the wolves.
Researchers at Linkoping University, Sweden studied the behaviour of the dogs by presenting them with an insolvable problem. The dogs were asked to open a tight lid of the jar to obtain a treat. DNA of the dogs was studied. Dogs seeking contact with a person more often carried certain genetic variants. Researchers found a clear association with DNA regions containing five different interesting genes.
This study might also help to better understand social disorders in humans.
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