The average heat cycle for a dog is approximately 3 weeks and since  this an an average, some heats are shorter (as little as 7-10  days), others are longer (4 weeks or more â¦).    Average times between heat periods is seven months but some dogs  can cycle as early as every 4 months, some once a year.emale dogs do not have periods per se, but they do go through a regular heat cycle if they have not been spayed, or desexed. The average heat cycle for a dog is anywhere fr â¦ om 1 week to 4 weeks in length. The time between heat periods is usually around seven months but can vary from every 4 months to once a year.
Current California Law: 1  Children under 2 years of age shall ride in a rear-facing car seat unless the child weighs 40 or more pounds OR is 40 or more inches tall. â 2 Children under the age of 8 must be secured in a car seat or booster seat in the back seat. Children who are 8 years of age OR have reached 4â9â in height may be secured by a booster seat, but at a minimum must be secured by a safety belt. (California Vehicle Code Section 27363.) Passengers who are 16 years of age and over are subject to California's Mandatory Seat Belt law. When can a child graduate to a booster seat?
Several states have laws requiring children to sit in the back until a certain age, so be sure to check the law in your state. Riding in the front seat simply isn't as safe as riding in the back. Buckling a child into the backseat instead of the front reduces his risk of being killed in a crash by a third.