According to most sources, the human hearing (frequency) range is between 20 Hz and 20,000 Hz (bats can hear up to 100,000 Hz!). What does that mean? Sound is a mechanical wave that propagates through a medium (air, water), and the frequency of a sound wave determines its tone and pitch.
A male dog can mate when he's 6 months and older. For females, it's best to wait until they are 2 years old. That way there is less of a chance of miscarrage and she'll have m â¦ ore time to mature and be physically ready for puppies.
The heat cycle in dogs, also known as estrus is the time female dogs can mate and get pregnant. The very first heat cycle typically occurs when the female dog reaches sexual maturity, approximately at 6 to 12 months old. However, there are larger breeds that mature later (at 18 months). The heat cycle has 3 stages and you need to know the details of these stages, especially if you have a female dog.