Yes, and this is why the correct use of a collar is stressed. I have used the stim on an e-collar exactly twice and that was when our last male was barreling down the driveway after a big snowplow on the road and the other it was a big piece of equipment coming by. Both times he got a brief stimulation and came right back or the alternative was to get hit by tons of metal coming by.My dog gets shocked while looking at his beloved goats, that he loved, watched over and played with, it flipped a switch in that dogs brain. Afterwards, he decided the goats MUST die. Unintended consequences, and I was not successful at turning that around. After 1 year of micromanaging, we rehomed the goats for their own safety. Which is why I caution how and when an ecollar is used.