The average length of the reproductive cycle for females is 2â4 weeks. Females reach sexual maturity (puberty) between 8 and 18 months of age. There is a tremendous variability in the maturation age between breeds, and even within a breed of dog. The first stage of the reproductive cycle is proestrus, in which eggs in the ovaries begin to mature and estrogen levels begin to rise.
It usually takes a head-on impact into something fairly solid at 30mph or more to trigger a frontal airbag. A car could be involved in a roll-over crash at 100mph or more, where it could flip over several times, and if there was no significant single front impact detected, the airbags wouldn't trigger.
âThatâs to do with the airbags going off,â says Ponti. âThose are meant to protect adults sitting there, not a small 12-year-old,â she says, adding that the back seat is, in fact, the safest place for all passengers. And even when the booster seat is a thing of the past, buckling up properly is still important.