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The aging profile of dogs varies according to their adult size (often determined by their breed): smaller breeds have an average lifespan of 10–15 years, with some even exceeding 18 years in age; medium breeds typically live for 10 to 13 years; and giant dog breeds have the lowest minimum lifespan, with an overall average of 8 to 13 years ...
Dogs do not consistently age seven times as quickly as humans. Aging in dogs varies widely depending on the breed; certain breeds, such as giant dog breeds and English bulldogs, have much shorter lifespans than average. [39] Most dogs reach adolescence by one year old; smaller and medium-sized breeds begin to age more slowly in adulthood. [40]
Dogs are highly variable in height and weight. The smallest known adult dog was a Yorkshire Terrier that stood only 6.3 cm (2.5 in) at the shoulder, 9.5 cm (3.7 in) in length along the head and body, and weighed only 113 grams (4.0 oz). The largest known adult dog was an English Mastiff, which weighed 155.6 kg (343 lb). [2]
Larger dogs would be breeds such as Great Danes and St. Bernards. She says, "The average lifespan for a small breed dog would be around 13 to 16 years, although many live longer.
The senior dog population consists of dogs that are over the age of seven for most dog breeds, [1] though in general large and giant breed dogs tend to reach this life stage earlier when compared to smaller breed dogs. Senior dog foods contain nutrients and characteristics that are used to improve the health of the aging dog.
In the United States, the prevalence of obese or overweight adult dogs is 23–53%, of which about 5% are obese; [22] [23] the incidence in adult cats is 55%, [23] of which about 8% are obese. [ 22 ] In Australia , obesity is the most common nutritional disease of pets; [ 24 ] the prevalence of obesity in dogs in Australia is approximately 40%.
The weight of the adult dogs increases with age and can reach 80 kg. [5] The average is at 73.50 kg reaching from 67 kg in Sangasar to 80 kg in Qira Diza. [ 5 ] The average body length is about 75 cm with the back length of aged dogs reaching over 88 cm. [ 5 ]
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