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.
For example, dogs are capable of reproducing at around one year of age, but a seven year old child is far from sexually mature. A 2 months old dog would be about 1 year old, but a 2 months old puppy is far more trainable than a 1 year old child.