How does the required voltage for an electrical barrier fence vary with the skin thickness of the target animal?

Question

It is observed that animals are sensitive to pulsed-DC repulsive fences depending on their particular skin structure (presence or absence of appendageal macropores), skin laminar composition, and epidermis total thickness. Based on data gathered from the web, argue what would be the ratio of pulsed-DC voltage required to deter an elephant vs. that required for a human (without assistive protection!)

Answer 1

The average skin thickness for humans is 2mm

The average skin thickness for Elephant is 2.5 cm

Elephant skin is about 25 times thicker than human

Elephant skin would offer 25 times more resistance to electrical impulses than humans

According to the equation V=IR (voltage, current and resistance) The higher the resistance(skin thickness) the higher the current needed(amplitude from the fence) to deliver the required voltage(shock deterrence).

As we are trying to reach a voltage of deterrence, the voltage required to prevent an animal from entering the fence will vary proportionally with skin thickness.