Final answer:
Larger breed dogs are generally considered geriatric at about 8 years of age, and aging in dogs is influenced by genetics, environment, and health. Geriatric dogs require specialized care to address their changing health needs.
Step-by-step explanation:
The question pertains to the life expectancy of larger breed dogs and at what age they are considered geriatric. The correct answer is b) 8 years.
Larger breed dogs are generally considered geriatric around 8 years of age, which is relatively younger compared to smaller breeds that are considered geriatric at an older age. It is due to the fact that larger breeds age faster and are prone to age-related health issues sooner.
The biological aging process in dogs is complex and can be influenced by various factors including genetics, environment, and overall health.
This is an important consideration for pet owners as geriatric dogs require different care compared to younger dogs, including more frequent veterinary check-ups, changes in diet, and modified exercise routines.