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 right age to allow a male dog to breed is once the dog has crossed one year of age this is so because at this age the dog has already attained puberty and the secondary sexual characters are developed to allow it to mate with a female dog they can breed at any age but that is the best time to do it