The longest-lived breeds, including toy poodles, Japanese spitz, Border terriers, and Tibetan spaniels, have median longevities of 14 to 15 years.[64] The median longevity of mixed-breed dogs, taken as an average of all sizes, is one or more years longer than that of purebred dogs when all breeds are averaged.[62][63][64][65] The longest-lived dog was "Bluey", an Australian Cattle Dog who died in 1939 at 29.5 years of age.[66][67]
Dog behavior is the internally coordinated responses (actions or inactions) of the domestic dog (individuals or groups) to internal and/or external stimuli.[94] As the oldest domesticated species, with estimates ranging from 9,000–30,000 years BCE, the minds of dogs inevitably have been shaped by millennia of contact with humans. As a result of this physical and social evolution, dogs, more than any other species, have acquired the ability to understand and communicate with humans, and they are uniquely attuned to human behaviors.[18] Behavioral scientists have uncovered a surprising set of social-cognitive abilities in the domestic dog. These abilities are not possessed by the dog's closest canine relatives nor by other highly intelligent mammals such as great apes but rather parallel some of the social-cognitive skills of human children.[95]
Domestic dogs have been selectively bred for millennia for various behaviors, sensory capabilities, and physical attributes.[17] Modern dog breeds show more variation in size, appearance, and behavior than any other domestic animal.[17] Dogs are predators and scavengers, and like many other predatory mammals, the dog has powerful muscles, fused wrist bones, a cardiovascular system that supports both sprinting and endurance, and teeth for catching and tearing.
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.

Book your grooming appointment online and select the Zen Spa Package – or ask your groomer when you arrive in-store. Zen Spa package includes soothing lavender shampoo and conditioner that can help relax your pup during bath time, in addition to lavender scented spritz that refreshes coats with a fresh-smelling aromas and essential oils. Package also includes your choice of 4 basic upgrades like nail buffing, teeth brushing and paw balm, and a special seasonal bandana.