OF DOGS
DOMESTICATION
• Domestication (from Latin domesticus) refers to the process whereby a population of animals or plants becomes accustomed to a controlled environment by other plants or animals through a process of selection.
When Were Dogs Domesticated?
• Study shows that the year 13,000 B.C. as the probable date of domestication at East Asia.
History of Domestication
• Dogs are descended from the wolves.Wolf remains have been found with hominid remains dating from 400,000 years ago.
• Genetic evidence indicate a time of domestication in late upper Paleolithic age.
Advantages of Domestication
• For help with herding and hunting, an early alarm system, and a source of food in addition to the companionship many of us today know and love.
• Dogs get companionship, protection and shelter, and a reliable food source out of the deal.
Routes for Domestication
• Orphaned wolf-cubs: some wolf pups taken at an early age and reared by humans are easily tamed and socialized. Over generations of time these ‘wolf-like' become more dog-like.
• The Promise of Food/Self Domestication.• As a beast of burden: North American Indians used
dogs for pulling sleds.• Mutual desire:Wild dogs who scavenged around
human habitations get more food than their fearful counterparts.
Changes during domestication
• a reduction in overall size• changes in coat colouration and markings• the shrinking in size of the teeth• a reduction in brain size and intelligence and thus in cranial
capacity [particularly those areas relating to alertness and sensory processing]
• the development of a pronounced vertical drop in front of the forehead (brachycephaly).
• Behaviourally, the wagging of tails and barking are retained throughout the dog's life.
• regurgitation of partially digested food for the young, have also disappeared.
THANK YOU