There was a Russian experiment (still running after decades) to breed domesticated foxes starting from wild animals. The friendliest pups in a litter were selec

There was a Russian experiment (still running after decades) to breed domesticated foxes starting from wild animals. The friendliest pups in a litter were selected for future breeding. Within just a few generations, the animals were tamer and even started to look like dog puppies. Wikipedia https://en.m.wikipedia.org/wiki/Domesticated_silver_fox https://en.m.wikipedia.org/wiki/Domesticated_silver_fox