Humans would also have derived enormous benefit from the dogs associated with their camps.[136] For instance, dogs would have improved sanitation by cleaning up food scraps.[136] Dogs may have provided warmth, as referred to in the Australian Aboriginal expression "three dog night" (an exceptionally cold night), and they would have alerted the camp to the presence of predators or strangers, using their acute hearing to provide an early warning.[136]
^ Jump up to: a b Thalmann, O.; Shapiro, B.; Cui, P.; Schuenemann, V.J.; Sawyer, S.K.; Greenfield, D.L.; Germonpre, M.B.; Sablin, M.V.; Lopez-Giraldez, F.; Domingo-Roura, X.; Napierala, H.; Uerpmann, H.-P.; Loponte, D.M.; Acosta, A.A.; Giemsch, L.; Schmitz, R.W.; Worthington, B.; Buikstra, J.E.; Druzhkova, A.; Graphodatsky, A.S.; Ovodov, N.D.; Wahlberg, N.; Freedman, A.H.; Schweizer, R.M.; Koepfli, K.- P.; Leonard, J.A.; Meyer, M.; Krause, J.; Paabo, S.; et al. (2013). "Complete Mitochondrial Genomes of Ancient Canids Suggest a European Origin of Domestic Dogs". Science. 342 (6160): 871–874. Bibcode:2013Sci...342..871T. doi:10.1126/science.1243650. hdl:10261/88173. PMID 24233726.

As humans became more sophisticated, so did their dogs. Eventually, there emerged specific breeds of dogs, custom-bred to suit the breeders’ local needs and circumstances. The Greyhound, for instance, was the foundation type for the immense Irish Wolfhound and the dainty Italian Greyhound. All three have a distinct family resemblance, but you’d never mistake one for another.
Avoid getting water in the ears and eyes. If water does somehow get in the ears, use a small cotton ball or cotton pad (not a Q-tip, as it could go too far in) and gently wipe pat the inside of your dog's ear. Your dog will likely shake his head to remove water as well (like after a swim). If your dog seems to be scratching his/her ear constantly after bathing, take them to a vet to address the problem.
Soak your dog thoroughly. Make sure your dog's coat is completely wet before you start applying shampoo to it. If your dog isn't afraid, you can buy and use a hose and water pressurizer attachment for the faucet. This is especially helpful if you have a large dog or one with a double-coat. AVOID getting water in your dog's ears. Water in the ears can cause an infection. Please be sure to only spray water/rinse water up to the dog's neck. The head can be cleaned separately (see below for instructions).
There are many different shapes for dog tails: straight, straight up, sickle, curled, or cork-screw. As with many canids, one of the primary functions of a dog's tail is to communicate their emotional state, which can be important in getting along with others. In some hunting dogs, however, the tail is traditionally docked to avoid injuries.[38] In some breeds, such as the Braque du Bourbonnais, puppies can be born with a short tail or no tail at all.[39]

If you are shy about touching certain parts of your dog, get over it. If you are going to clean your dog, you must clean your dog's whole body. If there are any fleas or ticks on your dog, let them sit for ten minutes after working in the flea and tick treatment shampoo. When the bugs are dead, make sure to fully wash all of them off. If they are left on, these could give your dog a disease. To get the ticks off, get your hemostats latched on the ticks head and pull outward so the head doesn't break off and stay in the body. This would include scrubbing all over your dog's body, even areas you are not comfortable with. Never use hot water, and be especially careful to avoid warm water or medicated shampoos on the genital area. This area is sensitive.
A 2005 paper states "recent research has failed to support earlier findings that pet ownership is associated with a reduced risk of cardiovascular disease, a reduced use of general practitioner services, or any psychological or physical benefits on health for community dwelling older people. Research has, however, pointed to significantly less absenteeism from school through sickness among children who live with pets."[191] In one study, new guardians reported a highly significant reduction in minor health problems during the first month following pet acquisition, and this effect was sustained in those with dogs through to the end of the study.[195]
The genetic divergence between dogs and wolves occurred between 40,000–20,000 years ago, just before or during the Last Glacial Maximum.[27][2] This timespan represents the upper time-limit for the commencement of domestication because it is the time of divergence and not the time of domestication, which occurred later.[27][28] The domestication of animals commenced over 15,000 years ago, beginning with the grey wolf (Canis lupus) by nomadic hunter-gatherers.[27] The archaeological record and genetic analysis show the remains of the Bonn–Oberkassel dog buried beside humans 14,200 years ago to be the first undisputed dog, with disputed remains occurring 36,000 years ago.[2] It was not until 11,000 years ago that people living in the Near East entered into relationships with wild populations of aurochs, boar, sheep, and goats.[27]

Long fur on the paws acts as a trap for grass seeds, grit, or even ice, so regular trimming is advisable. Use a pair of curved scissors with rounded tips. Work on one toe at a time and twirl the fur growing between two toes between your finger and thumb, and then snip the hair off at the base. Be careful never to pull on the fur, which elevates the skin and makes cutting it more likely. If you cannot see where the skin ends and the fur starts, then slide a comb through the fur at skin level, and using the scissors cut on the safe side of the comb. Repeat for each toe on each paw.
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