He described how a ship captain of the East India Company adopted a female jackal and had it mated to his spaniel, after which it whelped six pups upon arriving in England.
Further crossbreeding experiments were initially hampered by the hybrid female's apparent lack of interest in the dogs brought to it, though it subsequently mated with a terrier and produced five pups.
[1] Marie Jean Pierre Flourens attempted his own crossbreeding experiments nearly a century later, noting that first-generation matings between the two species tended to produce animals in which jackal characteristics were dominant, having straight ears, hanging tails, lack of barking, and wild temperaments.
He criticized Flourens's earlier experiments, noting that the specimens he used were all closely related; thus, their subsequent sterility would have been explainable as a result of inbreeding.
[10] In 2015, hybridization between golden jackals and domestic dogs in the wild was confirmed when three specimens with anomalous traits were killed in Croatia and had their genetic markers analyzed.
Two of the specimens, a light-colored female and a melanistic male, were very jackal-like in appearance, save for their coloration and rounded ears, while one was much more doglike, lacking the jackal's conjoined middle paw pads and sporting dewclaws and a white coat with brown patches.
During recent years, Aeroflot has used them for airport security as detection dogs to sniff out explosives otherwise undetectable by machinery.
The half-breed jackal-dogs were hard to train and were bred back to Huskies to produce quarter-bred hybrids (quadroons).