The dog age comparison table is as follows:
2 months old is equivalent to 2 human years; 4 months old is equivalent to 6 human years.
Six months of age is equivalent to 10 years of human life; 8 months of age is equivalent to 12 years of human life.
Ten months of age is equivalent to 14 years of human life; 1 year of age is equivalent to 16 years of human life.
Two years old is equivalent to 24 years old in humans; three years old is equivalent to 29 years old in humans; and every additional year after that is equivalent to five years old in humans.
The second age comparison for large dogs:
2 months old is equivalent to 1 year old human; 4 months old is equivalent to human 4 years.
Six months of age is equivalent to 8 years of human life; 8 months of age is equivalent to 10 years of human life.
Ten months of age is equivalent to 11 years of human life; 1 year of age is equivalent to 12 years of human life.
Two years old is equivalent to 26 human years; 3 years old is equivalent to 28 human years; and every additional year after that is equivalent to about 7 years of human growth.