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.
In most cases the airbags deployed during a minor accident. But one lawsuit charges that the airbags in a 2001 Honda Civic deployed for no apparent reason while the car was stopped at a red light. The driver in that case, Kristy Williams, barely survived the 2010 accident. Shrapnel tore into her carotid artery.