17/08/2025
✨️Imagine if people clutched their treat pouches the way they covet their shock collar remotes.
Imagine rewarding good choices instead of inflicting pain when a dog doesn’t meet our expectations.
Imagine treating dogs as the sentient beings they are — meeting their needs instead of demanding they shrink themselves into the mold of a “pet.” Quiet. Convenient. Seen but not heard.
Imagine a world where humans choose kindness, curiosity, and compassion over control.
I hope for that future.🫶
But it’s hard to picture when so many still press a button to shock their dogs… and then wonder why those same dogs learn to bite or display other behaviors indicating stress.
Here are several rigorous, peer-reviewed studies demonstrating how aversive training techniques—like shock collars, leash jerks, or physical punishment—can cause increased aggression in dogs:
Key Scientific Findings
1. Herron et al. (2009) – Survey on Aggressive Responses to Aversive Techniques
In a study involving 140 dogs referred to behaviorists, at least 25% displayed aggressive reactions to methods such as alpha rolls, dominance downs, muzzling, hitting, kicking, or grabbing jowls.
11% responded aggressively when using choke or prong collars, and 7% showed aggression in response to shock collars.
In contrast, reward-based techniques were rated as successful and did not lead to aggression.
2. Ziv (2017) – Meta-Review of 17 Studies
This analysis concluded that aversive training methods—positive punishment and negative reinforcement—jeopardize both the physical and mental health of dogs.
There’s no evidence that these methods are more effective than positive reinforcement; if anything, the opposite is suggested.
3. Portugal Study – Aversive Methods & Stress in Real Training Contexts
Ninety-two dogs in training schools using aversive, mixed, or reward-based methods were observed using video and cortisol (stress hormone) testing.
Dogs trained with high levels of aversive methods exhibited more stress-related behaviors, had higher cortisol levels during training, and displayed more "pessimistic" cognitive biases (interpreting ambiguous cues negatively).