did the teen have fur??? yes the shock is more powerful on direct skin but dogs have fur. these are the ratings for voltage on an electric fence
First of all, a controller must produce enough voltage (electrical
pressure) to overcome the resistance of the hair and hide of the animal. This is termed the guard voltage and is given by the type of livestock; minimum values are:
• 700 volts for short-haired animals (such as cows)
• 2000 volts for long-haired animals (such as sheep)
• 2500 volts or greater for other animals (such as deer).
,
, the voltage is less than 30 milli-amps and the duration of the correction is 1/4 of a second. at low voltage. think about basic electricity. even with the use of compactors in the collar the stored electricity is coing out at 30 milli-amps at 12 volts or less. there is no way to increase the voltage merely the amperage. the average static shock from a doorknob ranges between 3000 to 10000 volts.... at even lower amps of course but if you do the math the wattage, which is the amout of work the electricity is doing is the same