"This sensation is extremely painful but does not cause substantial harm to the animals."
"Any large animal, including bears, after experiencing it once or twice, will develop an instinctual fear and learn to stay far away from it."
"And the innermost layer will be a visual isolation trench, three meters deep and five meters wide, dug along the inside of the electric fence. This trench is almost invisible to the visitors."
"But it will be the last physical barrier preventing December from approaching the electric fence."
"Meanwhile, the entire boundary of the fifty-acre territory will be covered around the clock by a vibration fiber optic intrusion detection system and thermal imaging surveillance cameras."
"Any unusual approach or intrusion will trigger an alarm at the security center immediately."
