Dogs age more rapidly than humans, especially large breed dogs, and it is thought that one year to a human can be as many as seven years biologically for a pet dog. For example, if your dog is eight years of age, in “human years” your pet is approaching his sixties.
The life expectancy of a dog is highly dependent on its breed with most large breed dogs having a life-span of approximately 10 years (although in some breeds it is as few as five years), while smaller breeds may live for 20 years or more. However, most dogs are considered senior at seven years of age, while most 10 year old dogs can be considered to be in old age.
Pets go through different life stages, from being a puppy through a juvenile to adult, and their needs change as they age. Dogs grow up at different rates and some breeds stay puppies for a long time whilst others mature quickly, but all dogs should be mature by two years of age.
Each stage of a dog’s life requires regular veterinary check-ups and consultations regarding vaccinations, nutrition and exercise.