Working donkeys are often associated with those living at or below subsistence levels. Small numbers of donkeys are kept for breeding or as pets in developed countries. A male donkey or ass is called a jack, a female a jenny or jennet; a young donkey is a foal.Jack donkeys are often used to mate with female horses to produce mules.he donkey has been used as a working animal for at least 5000 years. Of the more than 40 million donkeys in the world, about 96% are in underdeveloped countries, where they are used principally as pack animals or for draught work in transport or agriculture.
In simplistic language, every matter in this world vibrates, so that vibration we call frequency, and we measure it in Hz. The sound has its own frequency which is also measurable in Hz. The guy in the beginning of the video says that everything owes its existence to sound.
This is because the sound waves are muffled by the floppy ear; still dogs hear a much higher and lower frequency than what we humans can. A dog has a hearing frequency of about 40 Hz to 60,000 Hz. The human hearing frequency is pegged at 20 Hz to 20,000Hz. However, dogs are known to be very sensitive to loud sounds. Loud noises that can be tolerated by humans would be extremely painful to dogs.