Citing a 2008 study, the U.S. Center for Disease Control estimated in 2015 that 4.5 million people in the USA are bitten by dogs each year.[176] A 2015 study estimated that 1.8% of the U.S. population is bitten each year.[177] In the 1980s and 1990s the US averaged 17 fatalities per year, while since 2007 this has increased to an average of 31.[178] 77% of dog bites are from the pet of family or friends, and 50% of attacks occur on the property of the dog's legal owner.[178]

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]

Neutering reduces problems caused by hypersexuality, especially in male dogs.[76] Spayed female dogs are less likely to develop some forms of cancer, affecting mammary glands, ovaries, and other reproductive organs.[77] However, neutering increases the risk of urinary incontinence in female dogs,[78] and prostate cancer in males,[79] as well as osteosarcoma, hemangiosarcoma, cruciate ligament rupture, obesity, and diabetes mellitus in either sex.[80]
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.

Dog grooming prices for nail trims can vary based on the the size and temperament of your dog, where the nail trimming takes place, and whether you bundle the trim with other grooming services. The average cost to get your dog’s nails trimmed usually ranges from approximately $10 to $25. Nationally, the average for dog grooming prices is $60-$80, which usually encompasses not only nail trimming but also bathing, haircuts and other services.
Unlike other domestic species which were primarily selected for production-related traits, dogs were initially selected for their behaviors.[96][97] In 2016, a study found that there were only 11 fixed genes that showed variation between wolves and dogs. These gene variations were unlikely to have been the result of natural evolution, and indicate selection on both morphology and behavior during dog domestication. These genes have been shown to affect the catecholamine synthesis pathway, with the majority of the genes affecting the fight-or-flight response[97][98] (i.e. selection for tameness), and emotional processing.[97] Dogs generally show reduced fear and aggression compared with wolves.[97][99] Some of these genes have been associated with aggression in some dog breeds, indicating their importance in both the initial domestication and then later in breed formation.[97] Traits of high sociability and lack of fear in dogs may include genetic modifications related to Williams-Beuren syndrome in humans, which cause hypersociability at the expense of problem solving ability.[100][101][102]
Yes, though it is usually better to use dog clippers if you can get them. Dog clippers are designed to cut dog's hair, which usually has a coarser top coat and a softer undercoat, but not every dog has this type of coat. For instance, Yorkies and similar breeds only have one type of hair, more like humans, and so it actually makes perfect sense to use human clippers on this kind of dog.
The health benefits of dogs can result from contact with dogs in general, and not solely from having dogs as pets. For example, when in the presence of a pet dog, people show reductions in cardiovascular, behavioral, and psychological indicators of anxiety.[197] Other health benefits are gained from exposure to immune-stimulating microorganisms, which, according to the hygiene hypothesis, can protect against allergies and autoimmune diseases. The benefits of contact with a dog also include social support, as dogs are able to not only provide companionship and social support themselves, but also to act as facilitators of social interactions between humans.[198] One study indicated that wheelchair users experience more positive social interactions with strangers when they are accompanied by a dog than when they are not.[199] In 2015, a study found that pet owners were significantly more likely to get to know people in their neighborhood than non-pet owners.[200]
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]
^ Wood, Lisa; Martin, Karen; Christian, Hayley; Nathan, Andrea; Lauritsen, Claire; Houghton, Steve; Kawachi, Ichiro; McCune, Sandra (2015). "The Pet Factor – Companion Animals as a Conduit for Getting to Know People, Friendship Formation and Social Support". PLoS ONE. 10 (4): e0122085. Bibcode:2015PLoSO..1022085W. doi:10.1371/journal.pone.0122085. PMC 4414420. PMID 25924013.
We continually review and update our pet grooming policies, procedures and standards, under the supervision of our Director of Veterinary Medicine, with counsel from a number of independent experts in animal care, behavior and ethics. We continue to train our teams on and reinforce the critical importance of following those policies at all times. Since 2015, we've worked together with the Pet Industry Joint Advisory Council (PIJAC) and the Professional Pet Groomers & Stylists Alliance (PPGSA) to encourage and support national health and safety standards for the grooming industry. We believe these standards are critical to the wellbeing of pets everywhere, and we continue to work with other pet industry leaders to encourage industry-wide adoption and adherence to them.