Origin of the domestic dog that was the most divergent group. The study found that the skulls of the "Goyet dog" and the "Altai dog" had some dog-like characteristics and proposed that the may have represented an aborted domestication episode. If so, there may have been originally more than one ancient domestication event for dogs as there was for domestic pigs. One theory is that domestication occurred during one of the five cold Heinrich events that occurred after the arrival of humans in West Europe 37 000, 29 000, 23 000, 16 500 and 12 000 YBP. The theory is that the extreme cold during
Parasitic flies of domestic animals flies in the Phylum Arthropoda, Order Insecta. Families and genera of dipteran flies are emphasized rather than many individual species. Disease caused by the feeding activity of the flies is described here under Parasitic disease. Disease caused by small pathogenic organisms that pass from the flies to domestic animals is described here under Transmitted organisms; prominent examples are provided from the many species. Disease caused by the feeding activity of dipteran flies is described here under Parasitic disease. Disease caused by small pathogenic organisms that pass from the flies to domestic animals is described here under Transmitted organisms; these organisms