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?
It's best to avoid this, especially if your vehicle has airbags in the front seat. All children younger than 13 years should ride in the back seat. If absolutely necessary, a child in a forward-facing seat with a harness may be the best choice to ride in front.