 The average life span of a female shortnose spurdog is 0–29 years old while the male life span is 0-26 though it is estimated that a female can live up to 46 years while a male can only live up to 33.Females also take longer to reach sexual maturity than males and on average are not fertile until they are over 15 years of age.7 years longer than the 8 years it takes males to reach maturity.