Dog's Life -

: Roughly speaking, a dog's first year equals 15 human years, their second year equals 9, and each subsequent year is about 5 human years. 3. Impact on Human Well-Being

: They evolved from a now-extinct species of wolf. Dog's Life

: While the average life expectancy is approximately 11.2 years, it varies drastically by breed. : Roughly speaking, a dog's first year equals

: Modern dogs can learn over 100 words and gestures. They use eye contact to communicate love—a gaze that actually increases oxytocin levels in both species. 2. The Biological Timeline : Roughly speaking