Many elements affect how long your dog will stay, making average lifespans handiest in part useful. Take as an instance the Chihuahua. Lifestyles expectancy from age 0 is 7.9 years. You may assume therefore that there isn't always a lot factor in rescuing a six-12 months-antique Chihuahua at a dogs home due to the fact the average age at loss of life for the breed shows you may simplest get to spend much less than two years with it.