I just visited Bali and encountered the Bali Street Dog for the first time, which is apparently a semi-feral breed that basically doesn’t care about humans at all http://bawabali.com/bali-heritage-dog/2585-2/

I wonder if they lost the genes that the study identified as causing hyper-sociability, or if they still have it but the phenotype is suppressed for various reasons (e.g. environmental)