Every year, between 6 and 8 million dogs and cats enter US animal shelters.[204] The Humane Society of the United States (HSUS) estimates that approximately 3 to 4 million of those dogs and cats are euthanized yearly in the United States.[205] However, the percentage of dogs in US animal shelters that are eventually adopted and removed from the shelters by their new legal owners has increased since the mid-1990s from around 25% to a 2012 average of 40% among reporting shelters[206] (with many shelters reporting 60–75%).[207]
Where the domestication of the dog took place remains debated, with the most plausible proposals spanning Western Europe,[9][28] Central Asia[28][29] and East Asia.[28][30] This has been made more complicated by the recent proposal that an initial wolf population split into East and West Eurasian groups. These two groups, before going extinct, were domesticated independently into two distinct dog populations between 14,000 and 6,400 years ago. The Western Eurasian dog population was gradually and partially replaced by East Asian dogs introduced by humans at least 6,400 years ago.[28][2] This proposal is also debated.[2]

Dog grooming also includes hygiene services such as toothbrushing and ear cleaning. Clean teeth are important to the health of your dog, and the pros have the patience and proper technique to get it done. Regular dog grooming can stave off tear stains, those reddish stains below your dog’s eyes. Anal gland expression is something not many people want to do on their own, even if they love their dog. A dog groomer can safely and efficiently release any blocked anal gland fluid. Other dog grooming services include nail trimming and clipping. Nationally, dog grooming prices range from $60 to $80. Most dog groomers offer discounts to customers who purchase monthly packages or bundle multiple grooming services at one time.
A Colorado study found bites in children were less severe than bites in adults.[179] The incidence of dog bites in the US is 12.9 per 10,000 inhabitants, but for boys aged 5 to 9, the incidence rate is 60.7 per 10,000. Moreover, children have a much higher chance to be bitten in the face or neck.[180] Sharp claws with powerful muscles behind them can lacerate flesh in a scratch that can lead to serious infections.[181]

"The most widespread form of interspecies bonding occurs between humans and dogs"[136] and the keeping of dogs as companions, particularly by elites, has a long history.[142] (As a possible example, at the Natufian culture site of Ain Mallaha in Israel, dated to 12,000 BC, the remains of an elderly human and a four-to-five-month-old puppy were found buried together).[22] However, pet dog populations grew significantly after World War II as suburbanization increased.[142] In the 1950s and 1960s, dogs were kept outside more often than they tend to be today[143] (using the expression "in the doghouse" to describe exclusion from the group signifies the distance between the doghouse and the home) and were still primarily functional, acting as a guard, children's playmate, or walking companion. From the 1980s, there have been changes in the role of the pet dog, such as the increased role of dogs in the emotional support of their human guardians.[144] People and dogs have become increasingly integrated and implicated in each other's lives,[145] to the point where pet dogs actively shape the way a family and home are experienced.[146]
Human emigrants from Siberia that came across the Bering land bridge into North America likely had dogs in their company. Although one writer[139] even suggests that the use of sled dogs may have been critical to the success of the waves that entered North America roughly 12,000 years ago,[139] the earliest archaeological evidence of dog-like canids in North America dates from about 9,400 years ago.[132]:104[140] Dogs were an important part of life for the Athabascan population in North America, and were their only domesticated animal. Dogs as pack animals may have contributed migration of the Apache and Navajo tribes 1,400 years ago. This use of dogs in these cultures often persisted after the introduction of the horse to North America.[141]

Experienced pet stylists hired from outside the company must complete a personal skill evaluation by a Petco Certified Pet Stylist or Grooming Salon Leader, as well as four weeks of safety and pet grooming operations training. They must also complete and pass a technical skills assessment within 14 days of hire. If the candidate does not pass the technical evaluations, they must complete Petco's 12-week Pet Stylist Apprentice & Certification program and retake the skills assessment.